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Common term used to desribe ecstasy pills in respect of the effect they have on abnormal jaw movements, often resulting in the user chewing ones face off!
"My mouths really cut up from those teethers the other day."
"We were teethin it up last night, BIG time!"
by Owen F October 22, 2004
one who teeths the cock
Krissy likes to teeth the FBI agent.
by RC897 August 13, 2003