Jessica Alba's babydaddy, Cash Warren, unloaded on a pack of paparazzi this weekend as they tried to snap pics of his pregnant fiancée, and X17online.com caught all the rowdy action on tape.

Cash and his pals are seen partying on a balcony and pointing at the snappers below. Then, with a rush of screams and yells, the gang burst through the doors and swarmed the befuddled lensmen as they scrambled to get back inside their cars! The paparazzi were then doused with water before Cash's crew called it quits. A very-pregnant Jess watched the display from the sidewalk.

Jess, 26, and Cash, 28, are engaged. The baby is due in June.

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