1 definition by saramaeo

BUI

"Boning Under the Influence" - Drunk sex, Similar to a DUI only it's when sex is involved instead of driving.

It's usually used when referring to the not so smart, careless, or stupid choices made when alcohol and sex mix.

friend: "I think I'm gonna bring him home after bars close."
you: "That's a BUI in progress!"

by saramaeo August 10, 2009