1. The act of rhythmically thrusting the penis between a pair of breasts.
2. Also known as 89 and other more vulgar terms.
2. Also known as 89 and other more vulgar terms.
by Dan October 19, 2004

by Sexycuban148 February 18, 2007

an activity or sport where the primary result is the actor feeling intellectually superior or abnormally arrogant for absolutely no reason. This can be achieved by wearing fancy clothing, using vocabulary that no one else would ever use, or using titles that make absolutely no sense.
Guy 1: Hey dude! How was that class debate?
Guy 2: It was freaking awesome. It was pure intellectual Masturbation.
Guy 2: It was freaking awesome. It was pure intellectual Masturbation.
by alexrider March 9, 2015

by JewJitsu123 March 16, 2010

when two or more people are masturbating. this can be back- to-back, in the same room, same car, etc.
by Jejejejeja September 4, 2009

To masturbate wile constipated, or to masturbate on the toilet wile taking a great big ass poop :-)!
by Andrew...aka...[CnW]Kill$hot September 30, 2007

Jacking off at random times in random places. If someone is a spontaneous masturbater, you never know when they will just whip their dick out and start beating it.
Zach pulled his dick out in the middle of the cafeteria and started pumping it. This is an example of spontaneous masturbation.
by Vengefulsorrow December 28, 2008
