(n) a significant other of questionable bedroom skills who is trying to sexually duck out on you for a new, inexperienced partner
by MsVile May 22, 2023

Normally associated with females who are pure filth and like to advertise this fact on the facebook wall of their siblings.
Jesus she is pure filth-a-boo look what she wrote on facebook: is looking foward to assessing the thrust and throttle of the F16 pilot she met today!!!
by Steeeeeeve Walls October 3, 2007

The Nasty air from inside a Restroom or closed space; typically is a public or somewhat unsanitary space
Person: Ew are you seriously using the hand dryers to dry your hands?
other person: Yea why?
person: Ew you do realize the hand dryers use Boo Boo air, right?
other person: Yea why?
person: Ew you do realize the hand dryers use Boo Boo air, right?
by 8BhocolateBhipBookies December 18, 2023

1. I like my boo more than you do.
2. Kim Jong Un: Boo!
His Army: *Simulates being scared*
3. Boo! you stink!
2. Kim Jong Un: Boo!
His Army: *Simulates being scared*
3. Boo! you stink!
by Ze_eT August 31, 2018
