Zack Galifianakis, "Hangover" Star, Smokes Joint on HBO's "Real Time with Bill Maher"

NEW YORK (CBS) The Hangover star Zach Galifianakis, better known as kooky brother-in-law "Alan," proved on Bill Maher's HBO show that he'll do just about anything for a laugh, including lighting up a joint to make a point.

That's right, Galifianakis appeared as a guest on HBO's "Real Time with Bill Maher" Friday and decided what better way to show his support for Proposition 19, which would make marijuana legal in the state of California, than to have a live demonstration, reports Radar Online.

When the subject turned to Prop 19, Galifianakis agreed that the law was "tricky politically" because some people still view pot use as taboo.

The actor, who was promoting his new movie Due Date on  "Real Time," handed over the reins of the discussion to another guest, shifted in his chair, reached into his pocket, pulled out the joint and lit it, says the gossip site.

Conservative Republican Margaret Hoover, who also appeared as a guest, could not stop laughing as she took a whiff, but not a puff, and announced..."It's real."

The discussion continued, but was interrupted by Galifianakis who teasingly yelled, "Oh my God! Look at those Dragons!"

Unfortunately for Galifianakis and other supporters of Proposition 19, the highly controversial bill is expected to go down in flames Tuesday, says RadarOnline.