Top Definition
pronoun- antecedent is always "biceps"
Expression used for the sake of being used; has lost most of original meaning
Origin- Speculated to have been coined by Theodore Roosevelt, as he was known to have an extremely well developed upper body.
"Knock Knock"
"Who's there?"
"Probably my biceps"
*swooning and possible copulation ensues*
by Jessetotallydidnotmakethis February 07, 2013

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