A combination of the words "Jew" and "instincts," Jewstincts usually refer to sound financial decisions. The term generally carries a positive connotation and is applicable to people of Jewish or non-Jewish heritage. It can be used as an insult in the proper context, especially if someone is being Scroogey with his or her money.
Guy 1: Bruh, when you gonna start paying for da weed, too? You always be hittin up on my stash!
Guy 2: Nigga pleez, you straight stuntin! You can pop hundies all you want, but why I gotta throw down Kraft singles when I can get it fo free from you?
Guy 1: Bitch, damn you and yo Jewstincts!
A half white, half asian dude, who has nappy hair that grows into a jewfro. This dude also happens to be super cool and isn't your typical asian (i.e. he's bad at math). He also isn't studying to be a doctor or engineer, he is in a international studies program. He also happens to be a stud.
Since JAPs have the tightest assholes (now you know where they make diamonds) in the world, sometimes it's a good idea to buy a bunch of butter and Astroglide and to go Jewsting. Nothing quite like it. You can even wave the smaller ones around in the air with your fist up their ass.
a small retard, who spends 50% of his time playing mlb videogames and the other 50% sleeping his life away and masterbating to myspace pictures of girls with hopes that he will marry them. originated in dallas, texas, (NOT) and has a firey crotch. he's often found shouting out phrases like "carry on the plan of your day", and "good to fucking go". he has friends that say "i secured that bitch!". which says alot about "the jewstin".
"that jewstin turned down webcamming a sexy girl to play mlb!"
"i thought that guy was a homo, but he was just a jewstin."