What is Filthy Yoshi?
1.
When at a stip club with a group of your guy and girl friends, and you bust a nut on the stripper while in white shorts and spending all the money you have left for the vacation on that one, 40-minute lapdance.
"I just gave that stripper the best filthy yoshi of her life" or "One time a guy I didn't even know filthy yoshied on me, then I charged him triple for the lap dance...and he came back the next day anyway."
See