squashing mushrooms

When you mush two dickheads together.

Hey, what are Robbie and Zack doing upstairs?
Probably squashing mushrooms.

squashing mushrooms by Ranch Hand 69 July 14, 2016

mushroom smashing 

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.

mushroom smashing by Systolic May 11, 2006