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A sex act in which your partner takes ice cubes into his/her mouth and performs a rim-job.
Dude 1: Hey man that girl Brenda is a freak!

Dude 2: Why do you say that?

Dude 1: She gave me a glacier rim bro!!

Dude 2: What is a glacier rim?

Dude 1: She had ice cubes in her mouth and she rimmed me, it was phenominal!
by dondecker420 June 30, 2011
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