Probably my Biceps

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 08, 2013