Top definition
1. jerkin it in someone else's shower, especially girlfriend's, room, personal property, etc.

2. masturbating or having a great time by oneself in or on a public or private property. trespassing must be a prosecutable offense whilst and wherever the pleasuring occurs in order for the term to apply.
I let Corey stay the night, big mistake. He tresfapped all over the bathroom. I even had to clean my damn mirrors. Does he do this often?

Corey got arrested for tresfapping again; he was in his ex's backyard this time. I guess you could call him a serial tresfapper.
by wiseboo May 15, 2014
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