Top Definition
The act of doing one finger push ups in two different vaginas at once.

Also can vary as a Dirty squish-up. (The act of squish-ups in 2 Butts)

Dude I had your mom and your sister over and we did 3 different sets if Squish-ups! Needless to say it got a little messy after the first set.

We got down and did 1 dirty squish up!
by Steve0son0820 February 27, 2008
7 Words related to SQUISH UP

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