Stevie Clark

Oklahoma State University basketball star Stevie Clark is in trouble again ... this time the 19-year-old freshman was arrested for allegedly peeing out of the window of a moving vehicle, TMZ Sports has learned. Law enforcement tells us ... Clark was arrested at 12:46 AM on Sunday in Stillwater, OK…

Oklahoma State basketball star Stevie Clark was arrested on New Year's Day ... and according to the police report obtained by TMZ Sports, he was rolling a blunt when he was busted. The 19-year-old -- who's a freshman guard for the Cowboys -- was a passenger in a Toyota Camry that was pulled over…