You are fucking doggie style. You pull out,
jizz on the
asshole, pee on top of the jizz, then you let him/her
fart and spray it all over you.
You- "Dude, I was fucking this chic last
night and I jizzed on her
asshole and covered it in piss!".
friend- "What'd she do bro?"
You- "She farted on me man!?!?!?"
friend- "Bro, you
got skunked!!"