by JJT BarBelPig August 4, 2010

The small, peverted blondie in you class who hits on every girl even though he is obviously not actually interested in them, but rather enjoys their reactions.
by Definatly Not AJ January 12, 2010

by wulffydwolf February 16, 2009

A short, chubby, man who is horny all the time and never shaves. AJs are referred to as little people who stick their dicks in various objects such as couches, oranges, and cat litter.
by The tank 300 November 24, 2013

AJ stands for arm jelly. The fat on the back of many a girl's (or guy's) arm that HURTS LIKE A BITCH when it gets pinched.
Working on building tricep muscles will often eliminate this.
Working on building tricep muscles will often eliminate this.
by RRRR. June 29, 2008

by Dargonman August 28, 2007
