Carrey sings: "You're a big, big man with a little bitty gland, so you need something bigger with a hairpin trigger."
“I never unplug,” says Edith Zimmerman, editor of The hairpin.
also hair-pin, 1788 (two words), from hair + pin (n.). A hairpin turn, etc., is from 1906. Hairpin (or clothespin) was American English slang for "person" c.1880-1910, especially in the expression "That's the kind of hairpin I am."