The homosexual act of rubbing the tip of ones penis against the tip of another man's penis for the purpose of sexual pleasure.
Ken took Ben home after meeting at The Manhole. They were so aroused in each others presence that they whiped out their erect cocks and started mushroom smashing until ken unleashed his man paste all over Ben's hairy chest.
by Systolic April 30, 2006
8 Words related to mushroom smashing

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.

×