A fork of Rural Dictionary
ABUs or ABU acronym for Anti Boner Underwear(s) , sort of self explanatory but for the non-erectile if you will, suggestive of your very best 'what if I get in an accident' quality of underwear that also has the magical property of being able to suppress a trouser ripping erection in an inappropriate public place such as church, school, or any other venue or situation where you wouldn't want to embarrass either yourself or the object of your deepest and most precious sexual desires.
Of course I want to fuck her, but her parents, priest and various law enforcement agencies will be present, so I'm wearing my ABUs.
ABU: An exclusive university attended by those who date promiscuous Asian gals
The monkey from Aladdin but mainly a way of saying "BOII DID YOU JUST ASSUME MY GENDER??" Or just "BOI"
Boy: yo dude did you see this post on Insta-
Unknown gender: ABU. Did you just assume my gender??