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In human anatomy, the bateceps are muscles located on the upper arm that have been acquired through frequent masturbation. Masturbation uses the biceps. Biceps acquired solely through masturbation are "bateceps". Bateceps are typically smaller than biceps acquired through exercise.
Boy 1: Yo man, I had one hell of a weekend. I masturbated so much, I got bateceps!
Boy 2: No way, dog!
Boy 1: Yeah bro, check it out. *flexes bateceps*
Masculine Man 1: My biceps are much more impressive! *flexes biceps*
by Hermeez July 21, 2010
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