An archaic car part that has been made mostly obsolete by tubeless tires. These days an inner tube is much more useful for floating on water, or for sledding on snow. It's a lot more fun that way too.

It's soft, inflated, donut-shaped, usually black, and frequently has patches glued to it where it had leaked.

Smaller versions may still be found in many bicycle tires.

A roll of fat, usually on a girl, that flops over a tight waistband and completely encircles the midsection, giving the effect of hiding an inner tube under the shirt. Particularly bad cases have been seen in which the inner tube is present even when there is no tight waistband for it to flop over.

The fat stomach of a woman that hangs over the belt (sometimes referred to as a Dunlap) so that it looks like she is wearing an innertube underneath her shit

A large fart housed in the large intestine, often rumbles. a very long and loud fart that sounds like a flat tire on the road.

A persons inner reflection of themselves. Especially if they are self conscious.