The unpleasant occurrence when one's excrement leaves the anus at such a trajectory and with such a velocity such that it gets friendly with rear part of the scrotum and or testicles
1. As your partner is pooing, start motorboating their butt cheeks.
2. You have your partner laying on thier back. You poo on thier stomach. Then you take one flab of skin and put it over top of the poo. Then you take another flab and fold it over the first flab of skin. Then you have sex with the poo.
1. . . . So I turned her over and as soon as she crowned I began mudflapping her.
2. She was a big woman so I started mudflapping her.
Ulzzang true definition is "best & "face" = best face in korean. They are basically people with above average looks, sometimes with the use of photoshop and haduri who post their pics online, some becoming internet celebrities.
"Hey, see that chick over there? She's pretty enough to be an ulzzang. :D"