Top Definition
The act of grabbing the excess skin of your ball sack, lifting it up like elephant ears and slapping a girl in the face with your dick!
Branham - Thompson, what happen with that chick.

Thompson - She sucked at giving head so I gave her a trunk slap.
by ~BTR~ January 14, 2012
When your girlfriend and/or wife is post sex cuddling and you roll over and whack her in the eye with your penis.
"She looked so peaceful, so I trunk slapped her!"
by Rezelka April 01, 2012
The sound made when a penis hits the inner thigh during vigorous movement.
"I really must wear something more supportive than boxer shorts when I run. My penis is raw from all the trunk slaps. It sounds like two elephants high-fiving when I run downhill."
by fairycakesupprise August 15, 2016
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×