A peel-out or skid-mark in the shape of a donut; a 360-degree skid.
Anything in the shape of a circle or torus.
A deep-fried piece of dough or batter, commonly made in a toroidal or ellipsoidal shape, and mixed with various sweeteners and flavors, sometimes filled with jelly, custard, or cream.
A spare tire, smaller and less durable than a full-sized tire, only intended for temporary use.
A toroidal cushion typically used by hemorrhoid patients.
An idiot.
A device used to store hats upon, consisting of a vertical pole with a sturdy base to prevent toppling, and an array of pegs to hold the hats.
Crazy, insane.