Scott Baio -- Threatened on LA Golf Course

Scott Baio got into a verbal altercation at a golf course in Los Angeles this week -- but don't worry, Chachi wasn't in any real danger ... cause the whole thing was staged.

TMZ obtained photos taken this week, showing Baio getting into it with TNA wrestler Eric Young -- and we're told the whole thing was shot for a comedy segment that will air on Impact Wrestling this Thursday on Spike TV.