1 definition by Penfield
A form of masturbation, aggressive and self destructive. A man that uses steroids masturbates in an explosive manor, preferably in the common gymshower.
Alexander Kejonen was tired and horny after working his biceps at the gym, he noticed a slight growth of the upper arms and decided to celebrate with a genuine testofap in the gym showers. The other men in the showers were cheering and shouting in a mix of fear and delight until ejaculation.
by Penfield January 19, 2013