1 definition by BTM 4eva

Abbreviation for Bad Teen Mustache, synonomous with crustache
Teenager 1: Hey Joe I want to grow a mustache so I will look older, then maybe Ashley will go on a date with me!

Teenager 2: Don't bother you'll just get a btm, Ashley is a whore's name anyway.
by BTM 4eva June 24, 2009
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