'Jersey Shore's' Snooki teaches David Letterman to fist-pump

"Jersey Shore" star Nicole "Snooki" Polizzi was a guest on "The Late Show with David Letterman" Tuesday night (Sept. 21), and she offered Dave some insights into the lifestyle requirements of the Shore.

After she explained the crew's pre-club ritual of getting ripped on Ron-Ron Juice before going out, Letterman wondered whether they "just go looking for someone to beat up."