An extreme case of diarrhea, akin to that experienced by the Japanese housed at the American Manzanar concentration camp. Usually used in a situation in which one will have to do their business in a public bathroom, again relating to the situation at Manzanar.
That meat they served at the cafeteria today gave me a serious case of the Manzanar runs; I'll have to blow up the toilet during English class it seems.
The girl must be wearing glasses. Poop is first thrown on the ladies face to act as mud. The male then ejaculates on her on her glasses, simulating soapy bubbles. He must dangle and swab his hairy scrotum across the glasses to scrub. Next he proceeds to urinate on her face to rinse off the mud and soap. And immediately turns around and blows a fart in her face to hot dry.