The act of waiting for someone to exit a bathroom, and when they do you quickly pull their pants down and make a run for it. The person must be a complete stranger, henceforth 'trespantsing'.
I was supposed to study last night, but instead I went trespantsing.
He is an amazing person. He will always be there for you in times of need. when your down he will always be there to talk. He has a very freaky side to him and will make u feel like the most sexiest person