On bong is basically a substitution word for On god, on moms and stuff like that.
Person 1: Dude my mom just died
Person 2: On bong?
Person 1: Sadly on bong.
A word that stands for “Lets Go Bomb The Church.”
Person 1: Hey man you wanna LGBT(C)
Person 2: Nah man I’m already doing that with my wife
Person 1: Ah alright.