'The Dudesons' Star Jukka Hilden Gets a Mouthful of Scorpion

"The Dudesons" star Jukka Hilden is at it again ... with another insane stunt that ends with a SCORPION TRAPPED IN HIS MOUTH!!

Jukka -- a member of the four-man stunt group from Finland -- was the lucky loser who had to stuff a live scorpion in his mouth, and attempt to duct tape the sucker in there for a full minute.

Why? Because playing with alligators is so last week.