When one of your arms is noticeably stronger or larger than the other, giving the impression that one beats their dick excessively. Does not have to be caused by dick beating, any activity that results in uneven arm musculature can be considered dick beater's arm.
I recently started practicing my axe skills, but only my right arm is getting any stronger. I'm going to get dick beater's arm!
by TheBikesman November 26, 2021