(v) verb
Definition: When someone farts and produces a clapping sound from his or her butt. Also can be used when someone is on the toilet and makes the same sound.
Wow John, your farting sounded like a clap! It's a butt clap!
by Monyrith March 6, 2006
This is when you have gonorrhea in your ass.
She can only give you butt clap with her strap-on if she licks it first!
by Moose Hole March 25, 2009