Hey Dave! Check Out My Rock Hard Abs!

7/5/2007 2:20 PM PDT
Though he was surrounded by a hot little blonde all day, Dave Navarro was caught getting physical with a dude at the Polaroid Beach House yesterday.

While mingling with a few ladies on the sand, a buddy came up to Dave and showed off his washboard stomach -- prompting the tatted-up rocker to sock him in the gut to see how hard they really were.

Judging from Dave's reaction, the guy's been working out to Abs of Steel!