1. It means when a large event has/will/will later take/taken place.
2. Its said after someone does a big win
Guy 1: "Bro after the sleepover, we gonna head to the mall and watch sonic 2... IN A PRIVATE MOVIE THEATER"
Guy 2: "BOOF MOTHAFUCKA!! SNOOCH TO THE MAX!!"
Boof is a word that can be used for basically ANY sentence.
It is mostly the lord of all words.
Wanna replace a swear word? Say boof, WANT FRIENDS? Say boof, Want to compliment someone? Say boof.
It works for any sentence! I hope you use it :)
"Boof you Timmy!," replaces swears.
"Can I be your friend, you look like a boof, its a good thing!," for friends. "Your scoores on that test were really boof," for compliments.
A strong odor of marijuana or shit
"GreenGreen smell like straight BOOF"