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!