Phlashing
A sexual act performed by a pair of old perverts on unassuming young men usually at boating lakes. The act involves getting a passer by to take a photo of one old man who pulls an erotic pose whilst an onlooking accomplice fondles himself off the photographers' anxiety.
"Hey Derek fancy going to the park for a spot of phlashing?"
Phlash Mob
A flash mob that occurs within Philadelphia, the city of Brotherly Love.
I need a special Gmail account to organize all of my Phlash Mob invites!