When you cum inside a man or woman and then proceed to leave your dick inside until the semen crusts and turns into something new like an egg in an incubation chamber.
The Mongolian Dishwasher is the act where a friend of your puts dish soap into his mouth and you take your balls out and dunk them into your friends mouth with the dish soap in his mouth.
You: "Yo bro, want to do some Mongolian Dishwashing?"
Bro: "Hell yeah, I already got the dish soap!"
Mongolian Dishwasher: *the act of your friend putting dish soap into his mouth and you dunking your balls into his throat*
Mongolian Rototiller is when you shave your pubic hair to a unibrow and you insert your peeper in the sink wagon and you 360 around like a helicopter propeller
Steve, did I tell you about last summer when I studied abroad in Mongolia? I got such a crazy Mongolian Pretzel that I couldn't walk straight for a month.