look up any word, like blumpkin:
 
1.
Jayster is a nickname for a woman named Jackie. A Fine Ass Woman who knows how to treat, please, and satisify any Man lucky enough to cum into contact with her on an intimate level. She has a killer sexy smile, beautiful soft and healthy hair that u just wanna run ur fingers thru as she pleasures you day in and day out.She has perfect , volumptuous size breasts that youd die for just to get a glimse of; the kind of breasts that you cud masterbate to at any time of the day just by thinking about them. She has an ASS that makes you wanna get lost in forever, its so big and perfectly shaped. And last but not least, she has the cookie of a Goddess im sure, and is no match for any mortal man except that of a man with a cock thats so mighty and rock hard that it tames her into a sex driven beast that wants to constantly be drilled, day in and day out. Jayster is undoubtedly my fantasy and best dream EVER!!
by richdoggydogg August 03, 2013
 
2.
Nickname of Gen X author Jay McInerney, as referenced in Bret Easton Ellis book 'Lunar Park'.
"That doesn't sound like... The Jayster..." (Bret - having been told that Jay McInerney was skinny dipping in his pool)
by Liquid Sky October 25, 2007
 
3.
Marijuana joint. Derived from the term, "J."
I cant wait until I am done rolling this jayster, so we can smoke it.
by alex February 28, 2005