coaster cop

those who keep scolding you, or even wait for you just to scold you when you don't use a coaster for your bottle or glass, esp. on the coffee table.

Geeze Taylor, your such a coaster cop.

jet coaster

a roller coaster type found in japan notable for being long an boring and unsafe. Most of them have stupid names like Super Thrill Train Speed Roller Coaster. Manufacturers include TOGO, Senyo Kogyo, and Meshio.

I rode a jet coaster in japan the other day, I almost fell off.

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slong coaster

When you get your tackle out at a dinner party and put it on the table

things were going swimmingly until Jimmy rocked the slong coaster

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cake coaster

The white cardboard square that prevents a Hostess cupcake from sticking to the plastic wrapper.

After eating the cupcake Vanessa licked the cake coaster clean.

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cum coaster

A tattoo on the lower back thought to identify a woman as sexually promiscuous. Such a tattoo is a hypothetical target for semen should a man be having unprotected sex with a partner doggy style and decide to pull out just prior to ejaculation, hence cum coaster.

See: Tramp Stamp

"I pulled out and shot my load all over that tramp's cum coaster."

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foot coaster

Noun - typically an old magazine or newspaper that is placed between one's feet and the surface of a coffee table so that the oils and perspiration from the skin of one's feet do not tarnish the surface of afformentioned coffee table as said person uses said coffee table as a foot rest.

Yo dude! Why are you using the sports page as a foot coaster?! I was still reading that.

Hey bro...hand me your sister's copy of Cosmo to use as a foot coaster.

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Penis Coaster

An act when a girl is jumping like crazy during sex on a guy's dick, usually with screams.

Guy1: I think my girl went insane last night. She actually just rode my penis coaster, that felt great
Guy2: Lucky you, homie