Jabón is a Spanish word and not to be mistaken with jamón (ham) or queso (cheese), translates to soap. However, it is often used very fluidly such as the word "fuck" and its many conjugations. A common expression is to say that you are eating jabón.
Calvin: Do wanna pick up some McDonald’s?
Kiff: Sure
*gets to McDonald’s*
Calvin: Dude I forgot my wallet, can you pay for me?
Kiff: you’re a fucking jabroni