a white patch on trousers or other items of clothing that resembles a stain caused by spunk

A bleached gook. A Caucasian from an asian country.

when you poop in someone else's toilet

ejaculation on the pubic hair of a woman

Something you call ye hoe. Or a fuckin asshole!!

When something sucks harder than a straw

Kaka stains or skid marks are residual shit from the ass or an insulting name, Kaka means shit in the language of the moari (native people of new Zealand.)