When you stick one fist in a girl's vagina and the other in her anus. Then you lift her up like a bow and arrow and point her at a target, acting like your shooting an actual bow and arrow shouting Harukan! Harukan!
Susie: Gess what?
Mary: What?
Susie:Myboyfriend gave me a mongolian mega punch last night Mary:Ahhhhhhhhh lucky!!!
A tactic where someone leaves a group of people or a public space immediately after farting. It derives from the tactics of Mongolian Horseback Archery, which involves attacking and then retreating swiftly to avoid retaliation.
Mongolian Fartchery is commonly employed for two reasons:
a) To avoid detection or accusation from others regarding the fart
b) As a spiteful farewell gift for others remaining in the public space
Albus, cut down on the Mongolian Fartchery... everyone knows you're not actually going outside to text anyways.
Have sexual intercourse with a woman until she's just about to climax. Pull out, and defacate vigorously on her and her sheets. Get off the bed and flip the mattress over with her underneath it, then jump back on top, bellowing loudly until you finish. Leave her to clean the room.
Works best following a greasy meal. Do not attempt in own residence.
After all that beer, rum, sausage, ice cream, and lobster, banging that ugly chick was a Mongolian Yak Crap waiting to happen.