The act of worshipping Rollercoasters.
I practice coasterism because it's my religion.
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When a basketball player is going coast-to-coast and dunks on someone on the other team for an easy bucket
Did you see John Wall's coasterizer last night? He destroyed Deandre Jordan.
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1) A unusable Compact Disc which failed during a "burn" process, its only use is now a COASTER
2) A witty and highly attractive person
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The feeling you get after you've been on a bunch of roller coasters and when you get off you still feel like you're on one.
"Bro, after I spent the day at Six Flags I was suffering from major Coasteritis."
Any disc recieved from America Online that contains its product. Since using the programs represents a net inefficiency for your time, it is better to use them as coasters that you can set your drinks on, lest you damage a wood or other valuable surface.
I got so many AOL 9.0 coasters last month, I glued them to my ceiling and now it's shiny, disco-style.
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Anything put under a cold drink to avoid rings of mist on the table.
I'll have a scotch on the rocks with a twist, and a coaster.
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A girl that won't let you have sex with her (won't let you get the wood wet).
1) I'm not paying for your meal tonight because you're a fucking coaster.
2) E: I heard Vincy fucked Amanda after the party the other night.
J: No fucking way. That girl is a coaster.
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