A sexual act involving of the male inserting his testicles into an anus and letting it close on his testicles.
Guy "Dude how was last night?"
Dude"Not good my girl/boyfriend forced me to use the pinch machine."
Guy "Ouch."
Dude"Not good my girl/boyfriend forced me to use the pinch machine."
Guy "Ouch."
by Rally Cry November 4, 2010
Get the pinch machinemug.