May 1 Word of the Day
When some little bitchboy is acting like a little tiny pee pee poo poo baby and messing up the group plans.
I’m tired I wanna go home

“Oh I didn’t know it was pee pee poo poo hours”
by A7sa July 03, 2019
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2
It simply means "let me know." Or get back to me with answer.

If it already formally exists, I don't know, but I started using it in my e-mails in the '90s for convenience. Today, someone responded "OH!!!!!!" after I replied to his "what's the meaning of that" e-mail. So, there you have it.
In e-mail commonly, consider for example:
1) If you need anything, LMK.
2) What're you guys doing tonight? LMK.
by Lee Djangmah April 03, 2006
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3
Lmk
Lmk means “let me know

Usually used in text message instead of in person.
Hey lmk about what happened later
by Bs_queen November 27, 2017
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4
lmk means let me know. It is also an app mainly used for Snap Chat. People will say this when they want you to tell them something.
Person 1: okay just lmk when you find out the news
Person 2: yeah you'll be the first to know
by imacoolkid1 April 17, 2020
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5
The letters LMK itself stands for 'let me know'. If you are talking about the app 'LMK' then it basically an app where you can meet new people, but it also has a bit of tinder in it as well. People generally don't even use the app as a dating app; they just explore topics such as politics, race, LGBTQ and religion most of the time.
2 lovebirds messaging on LMK

"Add me on snapchat, baby cakes

"OK, LMK if you added me.

Hehehhe get the pun?
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