Puddle of Mudd Singer Wes Scantlin -- The Post-Flight Mug Shot

With bloodshot eyes and a half-cocked smile, Puddle of Mudd singer Wes Scantlin posed for the cop cam yesterday after he was arrested for being a disruptive drunken idiot on a flight.

TMZ broke the story, a JetBlue flight bound for L.A. made an emergency landing in Austin, TX yesterday after Scantlin allegedly got in a heated drunken argument with a flight attendant.

Once the plane touched down, Wes was arrested for public intoxication -- but he could also face prison time for interfering with a flight crew ... a federal crime.

Scantlin is due in court in Austin on October 3rd, when he's scheduled to be arraigned.

We also got video of Wes getting cuffed on the plane -- it's pretty wild.