Having calluses; toughened: callous skin on the elbow.
Some of the calloused and discolored skin will rub off.
by freckled September 28, 2014
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when one's balls sag so much so that thee drag upon a surface which is most commonly cement. this coarse surface causes a hardening of the sack and, eventually, a thick callous
Man: my balls are bleeding
Lobotomy Surgeon: don't worry they'll callous and become calloused balls
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Callouses formed on the buttcheeks of a person usually as a result of sitting on a hard chair for an extended period of time. Common situations include your math review class after school which seems to drag on into oblivion, sitting on a folding metal chair at home while on your computer for several hours a day, or those long dinner parties with hard wooden chairs that you only go to because your wife begged you to.
Ex. 1: After staying after for math review for an entire hour, Jeff went home and played World of Warcraft until dinner time, when he was forced to sit at the table until all of his green beans were gone. Jeff has ass callouses.

Ex. 2: Marty plays Oblivion all day. He has ass callouses as a result.
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