*Below, Nicole “Snooki” Polizzi of MTV’s “Jersey Shore” and fellow Jersey resident Chris Rock got a little testy with each other during Tuesday’s episode of “The Tonight Show with Jay Leno.”

It all started when Snooki, poof and all, asked the Brooklyn born actor where in Jersey he lives. He replied, “The nice part.”

She then asks if he fist-pumps and when Chris replies, “What’s that?” She snaps back, “Do you live under a rock?” Jay diffuses an ensuring awkward pause with, “His wife’s under a rock.”

When Chris continues to show confusion over “fist pump,” she eventually turns her back to him and continues talking to Jay.

Behind her back, Chris shoots a WTF look that cracks up the audience.

Below, Chris Rock talks Bush/Obama, Arizona’s immigration laws, the Kobe Bryant incident and new movie “Grown Ups”