In prison, its the opposite of tossing salad. It's when the one who's salad has been tossed has the opportunity to shove something up the tosser's ass, i.e. a stick, soap, a penis.
"Did you hear about Joe." "What?" "Big Frank tossed his salad, so he shoved a mop up his ass."
1. A menu item at Olive Garden. Grilled 18 oz choice T-bone brushed with Italian herbs. Served with Tuscan potatoes and bell peppers.
2. A Tuscan T-Bone occurs when a guy is ready to slide it gently into a cute, usually Italian, chick's pussy. He first takes a peek to enjoy the view and discovers a disgustingly hairy crotch, tries to ram it in before he gets sick, misses her camouflaged hole, and jams his cock into her taint. All of this ends with his bone crumpled into the shape of a "T".
Bill: Ouch! Shit!
Sophie: What happened?
Bill: What do you mean, what happened? I took one look at your snatch and ended up with a Tuscan T-Bone. You could warn a guy!