Let That Sink In: What It Means & How to Use It

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Plus, how a common idiom became a viral and punny meme
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“Let that sink in” is a common expression that emphasizes a surprising or important statement and encourages people to think about it so they fully grasp it. It’s also the inspiration for hilarious memes and short videos featuring sinks that want to get indoors. Whether you’ve heard this phrase in conversation or saw it in a meme, we’re here to explain exactly what “let that sink in” means and how to use it.

What does “let that sink in” mean?

“Let that sink in” is an expression that means to reflect on something so you fully understand its importance. Say “let that sink in” after a surprising statement to emphasize it and encourage someone to take it to heart. For example, “There were volcanoes on the moon when the dinosaurs lived. Let that sink in.”

Section 1 of 4:

“Let That Sink In” Meaning

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  1. “Let that sink in” is an idiom that usually follows a surprising, important, or consequential piece of information. So, when someone says “Let that sink in,” they're really telling you “Think about this information so you can fully appreciate or comprehend it.” Even though it sounds like a command, “Let that sink in” is mostly a rhetorical phrase used to emphasize the statement that comes before it. [1]
    • “Mountain gorillas are now endangered because of human activity. Let that sink in.”
    • “I’m not paying your bills for you anymore. Let that sink in!”
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Section 2 of 4:

When & How to Use “Let That Sink In”

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  1. If you’re delivering some shocking, surprising, or deeply important information, add “Let that sink in” to call out the significance of what you just said. You could be talking about something fact-based or academic, like a new scientific discovery, or something personal or emotional, like news of a divorce. [2]
    • “At the rate sea levels are rising, we won’t be able to protect some of our most important cities. Let that sink in.”
    • “We’ve been dating for 3 months and I’m always the one to text you first. Let that sink in.”
    • “The RMS Lusitania was a giant ship that sank in only 18 minutes! Let that sink in.”
  2. Whether you’re in charge and have declared a new policy or there’s been a big change in your community, say “Let that sink in” to tell someone that the new change isn’t going anywhere soon. It’s like a sassy way of saying “Get used to it” or “That’s the way things are now.”
    • “From now on, no phones after 9 o’clock. Let that sink in!”
    • “Gas prices are gonna go up before they come down again. Let that sink in.”
    • “We can’t afford to move right now, okay? Let that sink in.”
  3. In a public speaking setting, use “Let that sink in” as a rhetorical device to signal to your listeners that you’ve just made an important point that affects the rest of your talk. You might pause briefly after saying this, or tell them to keep the information in mind as you continue.
    • “The universe is constantly expanding and growing larger. Let that sink in for a moment before we move on.”
    • “As you can see, dark money has been influencing US politicians for years. Let that sink in as we discuss the impact grassroots organizing can have.”
    • “In conclusion, we all have the power to make ourselves happy. Let that sink in as you go about the rest of your day.”
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Section 3 of 4:

Replying to “Let That Sink In”

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  1. “Let that sink in” is mostly a rhetorical phrase (a sentence that’s used for dramatic effect or style) that emphasizes the fact or statement that comes before it. So, react to whatever information is being delivered with “Let that sink in” instead of responding directly to the phrase itself.
    • Them: “You can fit 1,300,000 Earths inside of the sun. Let that sink in.”
      You: “Wow, the sun is huge!”
    • Them: “I’m your parent so what I say goes. Let that sink in!”
      You: “This is so unfair!”
    • If someone says “Let that sink in” during a lecture or presentation, though, don’t respond out loud or it may cause an interruption.
  2. If someone tells you “Let that sink in” after delivering some hard or startling news, they might be encouraging you to take some time to process it before responding or making any big decisions. In this case, it’s like they’re telling you “Take a moment to come to terms with this” or “Reflect on this first before you act on it.”
    • Them: “I know this news is hard to hear, so let it sink in before you decide what to do next.”
      You: “I will, thanks.”
    • Them: “I’m sure you’re angry about your breakup now, but let it sink in for a while before you reach out to your ex.”
      You: “You’re right. It’s still too fresh to talk about.”
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Section 4 of 4:

“Let That Sink In” Meme Meaning & Origins

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  1. Instead of “sink in” meaning “absorb” or “understand,” this meme shows a literal sink (like the basin you wash your hands in) standing in a doorway, waiting to be let inside. [3] Sometimes, the sink is shown standing in the rain to make it appear sad or in urgent need to get indoors.
    • If someone makes a post online or sends a text that ends with “Let that sink in,” reply with the meme to make a lighthearted joke or to show that you understand what they said.
  2. The earliest known use of the “let that sink in” meme happened in response to a post by user @worldpeaces that said “Can we just take a second to realize that there are 14 year olds who weren’t born in the 90’s? Just f*****g let that sink in.” User @dutchster replied with an image of a sink standing in a doorway with the caption “What the f*** does he want now?”
    • The meme grew in popularity throughout the 2010s and spread to other platforms where users regularly reply to one another like Reddit and Twitter.
  3. In 2022, billionaire Elon Musk had a lengthy and messy back-and-forth with the social media platform Twitter (now X) as he tried to purchase the company. Most people believed the deal would never actually happen, so when it actually went through, Musk filmed himself walking into Twitter HQ like he owned the place (because he finally did) and carrying a sink basin. [4]
    • Musk posted the video with the caption “Entering Twitter HQ. Let that sink in!” to reference the meme and to establish that he now had full control of Twitter.
    • Since then, online content creators have made tons of videos of themselves walking into places carrying sinks or opening doors to reveal a sink standing there to nod to both the meme and Musk’s video.
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      References

      1. ↑ https://www.dictionary.com/e/slang/let-that-sink-in/
      2. ↑ https://linguaholic.com/linguablog/let-that-sink-in-meaning/
      3. ↑ https://speakspeak.com/idioms/idiom-and-pun-meaning-let-that-sink-in
      4. ↑ https://www.forbes.com/sites/qai/2022/11/05/elon-musk-twitter-sink-whats-elon-up-to-this-time/?sh=42edce7c7b1d

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