1 definition by fattymatty3000

Top Definition
IBM
Instant Boner Marker.

The acronym is pretty self explanatory. To be used to describe a hot chick. If she is hot enough to be an IBM, you will get a boner instantly.
Damnn check her our, she's an IBM (Instant boner maker).
by fattymatty3000 June 26, 2011

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.

×