80's movie (I think) with a bar full of tough guys (bikers maybe truckers) and they arm wrestle over petri dishes with black scorpions inside. When the guy loses and us stung he cuts the sting out of his hand with a pocket knife while the bar crowd cheers. Its all I remember. I found 7 other people that also remember tge scene but not movie or main actors. PLEASE help! (Its not Appaloosa! That has scorpions but not in an 80's style bar!) Thanks!