Apparently this guy was having a hoot with it.  I think I would too.  Picture the fun you could have. 

UFOs baffle O.C. earthlings
3-foot-wide foam saucer stops traffic, empties bars and is said to ‘drip fire.‘
By TOM BERG
THE ORANGE COUNTY REGISTER

IRVINE - He is used to attention. To crowds. To causing a stir.

The hoax master has fooled thousands. But now, it appears, the jig is up. Three golf carts of security guards and uniformed men converge on Linn Murphy in a dark park behind the Orange County Fair.

They’ve got him – and the so-called UFO he’s been hovering tonight over the fair’s packed concert.

linky to article

Heh.. the guy upstaged Wierd Al.. Massive silliness.