Slang used by classless, low brow, ghetto male douchebags (usually brown people, but they don't have the monopoly on it) when a pretty woman (or let's face it, for these types of males, anything with two legs and a vagina) walks by to denote they would like to *checks notes* "tahp daht ayss"-have sexual intercourse with her, for those of you who don't speak Ebonics. Consent optional, of course.
Woman walks by
Brown person: I'm in!
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Woman makes Youtube video
Ghetto Trash commenter: I'm in!
Lil Durk's verse in Drake's hit single "Laugh Now Cry Later". A popular phrase used by some. It means, despite gaining a lot of fame and wealth, Durk is still in the hood. Lil Durk has not forgotten where he came from.
Malachi: The boy, Jacob, catted. The boy think he all that, now he don't wanna be associated with us.
Jacob: I'm in the trenches, relax.