Top Definition
Your partner/lover/girlfriend - who has a very 'smushable' bum.
Wow Smushbum your bum is SOO smushy!
by Pancakepie93 April 02, 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.

×