The defintion of WAT is quite a simple slang word stating in letters, 'What about tomorrow'.
Texting:

Liz - "Hey Susan can i come round and collect the presents ?"
Susan - "I'm busy today WAT ?"
Liz - "Yes, Tomorrow is great"
by Smartwaycod August 20, 2018
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The way a person would respond to something that makes absolutely no sense. An alternative way of saying "what" on a chatting platform for people that don't have the attention span to write the entire word.
Guy1: I'm going to birth 500 carrots.
Guy2: wat
by Just_some_random_memer July 10, 2021
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When you are to lazy to say "what."
Mike : I hate Dave.
Dave: You wat mate?
by The-meme-queen December 5, 2017
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Look at Jude, Julia, Abby , Lilly and Sierra, they are Wats. Don't mess with that group of girls
by Wats1234 December 8, 2015
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a replacement for "what" that sounds more babyish and makes you look more ignorant
male 1:did you hear that john was cheating
male 2:wat
by CAN I GET UHHHHHH November 19, 2019
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buttBUTTBUTTBUTTTBUTTTTTTTTTTTTT
wat is a butt
by BRUHHHhhrhrh May 21, 2021
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The meme/online spelling of what. Popular from the 'wat' meme.
Person 1: Yoskgjickianicicicwonius Syndrome is a Mental yastriligus sidios condition that affects the brainal area.
Person 2: wat

Note: All said it person 1's sentence is FALSE.
by SkeletonGuy November 15, 2018
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