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Definitions by Funnyguy39457934150

Short for Pre-Ejaculatory syndrome.
When a man ejaculates before his partner wishes him to.
Dude, my bro was grindin it up on some chick last night then prejayed all over his underwear.

My boyfriend prejays everytime we start making out!
Prejay by Funnyguy39457934150 September 8, 2010