When a male masturbates with one arm more than the other causing it to be muscularly bigger than the other one.
Guy 1: "Yo whys your one arm so big son?"
Guy 2: "Ahh i got Hammer arm, i jackoff with my dominate arm more then the other one so it's just uneven."
Guy 2: "Sounds like you needa switch it up a bit man."
Prices shown in USD.
Type your email address below to get our free Urban Word of the Day every morning!
Emails are sent from firstname.lastname@example.org. We'll never spam you.