Justin Bieber Flips Off Photog at Maxim’s “Big Game Weekend” Party

Last night kicked off a weekend full of pre-Super Bowl bashes, and Maxim toasted the grand tradition of sport with the “Big Game Weekend” bash, presented by Talent Resources Sports, and sponsored By AQUAhydrate, Heavenly Resorts, Wonderful Pistachios, Patron Tequila, Touch By Alyssa Milano And Philippe Chow.

Justin Bieber arrived after 2am, according to TMZ (via Daily Mail), and gave the finger to a house photographer he caught snapping pictures.

“Justin was in a bad mood, it was obvious,” a source inside the event at ESPACE told Celebuzz.  “He was denied a few parties.”

Bieber didn’t leave the party until 4am, and started to unwind the longer he stayed, sipping on AQUAHydrate and talking to girls.

“There were 9 security guards around his tables,” the source added.  “If anyone tried to take pictures he flashed his light at them.”

Earlier in the evening, he was mobbed by a female fans, and graciously let one kiss him on the cheek.

Other attendees included Jill Zarin, Brooklyn Decker, Bar Refaeli, Aaron Paul and Jon Gosselin (for reasons unbeknownst to us).