Trivia bit about Charles Bronson. As a teenager, he worked in a coal mine, earning $1 per ton of coal mined. In the process he became extremely muscular, and he learned an unparalleled bar trick.
He would insert his thumb and small finger into a shot glass, and spread them enough to pick the glass up. Then he would spread them further, to break the glass.
Didn’t he do that stunt in “The Mechanic”?