Bam Margera was arrested after allegedly making a scene at a restaurant where his estranged wife and son were eating ... and cops say Bam was drunk in public.
Law enforcement sources tell TMZ ... police in Burbank got a call around 3:45 PM Wednesday for a disturbance at a Thai food restaurant, and when officers arrived they found the "Jackass" star arguing with a woman, with the dispute getting louder and louder.
Our sources say when police got to the restaurant, Bam was unable to take care of himself and was arrested and booked for misdemeanor public intoxication.