'The Hangover' gets funny teaser trailer

Here's the first teaser trailer for Todd Phillips' upcoming comedy "The Hangover," debuting in theaters June 5, 2009.

The film centers on three best friends who literally lose their best friend during his wild bachelor party in Las Vegas. Together, they have to figure out what went wrong the night before.

As you can see in the preview below, they're facing quite the weird situation: waking up and finding a tiger and a baby in one's hotel room is quite scary indeed...

Bradley Cooper, Zach Galifianakis, Heather Graham, Jeffrey Tambor, Justin Bartha and Ed Helms star. Phillips also helmed "Old School."

Phillips is directing a script by Jon Lucas and Scott Moore, who also wrote Christian Charles’ “Full of It” and Mark Waters’ upcoming romantic comedy “The Ghosts of Girlfriends Past.”