noun; a crush you have on someone you hate but love at the same time.
Samuel: that girl keeps on being a b*tch to me... But i still love her.
phil: man, you've got a red crush.
After drinking a can of Red Bull, crushing the can due to the Popeye style effects gained from the canned beverage.
Popeye: "Fuck spinach, this red bull is the shit"
*Peforms Red Bull Crush*