Top Definition
One who seeks out extremely obese sex partners. Similar to a chubby chaser or a plumper pumper.
Holy crap! Look at the size of his girlfriend! I bet she weighs 500 lbs! He's totally a Boulder Banger.
by Sanity Deprived Lunatic May 20, 2010

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.

×