When I was 19, me and some buddies went bar hopping. We're in this lil hole in the wall, coonass joint. The kind with cajun music blaring, the old hardwood floors, and no Air Conditioning.
I'm not a very big guy (5'8" around 145 at the time). In walks a guy who looked like he could play tight end at a small college. Dude was wearing overalls, and white shrimp boots. My buddies dared me to go over and harrass the guy about his attire.
Went over fairly well at 1st. Dude just kinda laughed at me. So thinking I was in good with him, I decided to make a few jokes about fucking farm animals. Apparently, this wasn't as funny to him as it was to me.
He issued a warning that if I didn't get out of his face, he be gracious enough to make my smile match his gap toothed grille.
I then spoke the dumbest sentence ever to come out of my mouth. "50 bucks says your fat ass can't swing fast enough to land a sqaure shot on me"
I lost that bet, 1 tooth, my wallet, my pride, and about 6 hour window of time during which I have no clue what happened. When I woke up the next morning, my left eye was swollen shut, bottom lip was about twice the size it was when I left my house the previous night, had 4 stitches in the back of my head, and a broken nose. The bridge of my nose still has a lump on it from that night (11 years ago).
Needless to say, I haven't mouthed off to very many toothless giants that look like they just climbed off a trawl boat.