Top Definition
Having several sexually transmitted diseases at the same time.
Lana has a blue waffle, a purple sock, the clap, the drip, and crabs at the same time. So Lana has a Rainbow Muffler.
by RainbowMufflerz April 06, 2011
Gay Anal Sex; Homosexual Buttfuck; When two men do each other!
Robert: Hey Baby, I want to give you a Rainbow Muffler!
Peter: LOL
Roosevelt: I'll take it baby
by RMenke April 06, 2011

Free Daily Email

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

Emails are sent from We'll never spam you.