Protective Squint
Squinting your eyes to protect them from flying debris.
Worker 1: "Elmer, you are supposed to wear a face shield when using the grinder."
Elmer: "I ain't worried, I have my protective squint" (squinting)
Worker 1: "Frigging idiot, I'm not driving you to the ER again".
Elmer: "I ain't worried, I have my protective squint" (squinting)
Worker 1: "Frigging idiot, I'm not driving you to the ER again".