cari istilah yang lo mau, kaya' ratchet:
 
1.
To administer a psychoactive drug rectally.
Idiot: Booty bumping tweak is awesome!

Idiot with deathwish: Stop being stupid. It's all about mainlining.
dari Not an idiot Senin, 10 Juli 2006
 
2.
when one shakes ones ass against another's ass and vibrations in between would result in a booty bumping.
"I was shaking my thang, when this chick suddenly grinding in my space booty bumping."
dari Jaysin and ahmanduh Jum'at, 28 Agustus 2009