guy 1: dude what happend to your hand? guy 2: i had this crazy jerk-a-thon in front of the tv this weekend, my dick is still sore
when one masterbates for hours until hands, dick/pussy are sore
"guy 1: dude what happend to your hand? guy 2: i had this crazy jerk-a-thon in front of the tv this weekend, my dick is still sore" What is the definition of "jerk-a-thon"?