The feeling you get after prolonged screw driver use—the blistering soreness in the palm of your hands that makes you want to drown them in an ice bath.
Man, I've got some serious screw driver hands after putting up those mini blinds!
The use of the word "blue" to refer to sexually explicit content was first recorded in Scotland in 1824. "Blue" meant "lewd" because prostitutes dressed in blue gowns.