callous and toughened by experience

(idiomatic) One acts in a threatening way but is relatively harmless.

(obsolete) a male homosexual

(slang, vulgar) An open-handed slap to the face.

Alternative spelling of bitch-slap

(idiomatic, slang, offensive) An expression of discontent or aggravation to another party. / (idiomatic, slang) A taunting phrase, essentially meaning "I don't care".

Alternative spelling of nail biter

Alternative form of itsy-bitsy

(law, informal) the concept that a dog is not considered dangerous until it has bitten someone.

(slang, derogatory) An employee of a restaurant who washes dishware, typically a minimum wage position where workers are not well-treated.