A common prison sex practice, where one inmate inserts his penis into the other inmate's often unshaved armpit. The term comes from the contact of the testicles to the armpit hair.
Prison Mike: C'mere, boy, lemme hair ball you.
Prices shown in USD.
Type your email address below to get our free Urban Word of the Day every morning!
Emails are sent from email@example.com. We'll never spam you.