Slant eye or epicanthic fold or epicanthal fold or epicanthus is a skin fold of the upper eyelid, covering the inner corner of the eye.
European ethnic groups that tend to have epicanthus relatively frequently are Scandinavians, Poles, Germans, the Irish and British.
Note: funny in its irony that whiteys make slant eye an Asian trait when Europeans have it too.
Student: "Why do they call slant eye an Asian eye trait when white people have it too like Scandinavians, Germans, British, Irish?"
Master: "Because they are too stupid and ignorant, literally. They don't know when they're insulting themselves. An educated person would know Europeans have slant eye too."
When you start in London bridge and the girl or guy in the bridge position lifts his/her legs and clamps them around the (other) guy (or girl with a a strap on) resulting in a slant angle in relation to the ground plane.