Internet meme originating on 4chan and widespread on iFunny, tumblr, and reddit. It's a picture of a frog on a unicycle with the caption: "here comes dat boi!", followed by, "oh shit waddup!"
self-proclaimed meme lord #1: here comes dat boi!

self-proclaimed meme lord #2: oh shit waddup!
by dopeswipepro May 11, 2016
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Means yes in Hawaii ex. Hay brah you want to go to a titty bar? Roger dat
Hay brah you want to go to a titty bar? Roger dat
by Arcileas December 31, 2014
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Normaly asked when questioning some one at the front door or on the phone.
George: Did you hear the door bell ring?

Adam: Ya, who be dat?
by Digger September 3, 2005
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A gettological phrase said from one brotha to anotha brotha who spittin facts so hard they begin to resemble legislation.
Brotha: “Bruhhhh , I ain’t need no hoe... But I sure could use a pair of trusty pliers to trim that darn hedge in my front yard.”

Anotha: “Dat law.”
by Gettological Scholar July 9, 2021
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Dat Boi means when there is a frog on a unicycle and greets you with"Oh dat Boi oh shit whatup" then leaves
It's dat Boi

Dat what

Dat Boi its Dat Boi Carl you mistake!!!
by Roger da dodger June 11, 2016
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A word that people say witch means a gun
"talk some more shit n**** I'll pull up with dat stick"
by LilBigD December 18, 2017
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