n. UN'yun fuk - A woman with a hot body, but an ugly face. Derived from the fact that before you fuck her, you'd like to raise her skirt above her head and tie a rope around it to keep it in place, thereby creating an onion-dome shape.

v. - To actually fuck such a woman in such a manner.

A term used to reference cannabis/marijuana/weed.

When a couple rubs onions all over their body before they have sex in order to make things sexier.