by Anonymous September 21, 2003
Jacking off prior to the actual desired ejaculation time - the goal being to cut down the time required when actually finishing the job.
He didn't think she was actually going to do the trick, so he started pre-jacking while she was in the bathroom.
by bestnarcolepsyever March 16, 2009
Clear substance which precludes sex. Often causing squigy-ness in one's shorts, leading to your hammer sticking to your gitch.
ex.1
Guy: You don't have to spit baby!, just use the pre-jack!
Girl: yeah!
ex.2
Girl: Shit, did you cum already!!?!?!
Guy: Naa, Girl, it's just a lil pre-jack... fap.
Guy: You don't have to spit baby!, just use the pre-jack!
Girl: yeah!
ex.2
Girl: Shit, did you cum already!!?!?!
Guy: Naa, Girl, it's just a lil pre-jack... fap.
by Bejnay March 11, 2009
girl 1: i heard you had sex with your boyfriend for the first time last night.
girl 2: ya i did
girl 1: well? how was it?
girl 2:... he has pre jack
girl 2: ya i did
girl 1: well? how was it?
girl 2:... he has pre jack
by dreadlockmamba January 12, 2011
To grab, buy, or do something before it is necessary to do it in order to prevent having to do it in the future — just in case it would be necessary to grab, buy, or do it later.
by Prejack February 03, 2024