pain in the ass
词源说明
Dysphemistically modelled after pain in the neck. First attested in the early to mid-20th century.
释义（英文）
名词 Noun
- (idiomatic, slang, vulgar, Canada, US) Something or someone that causes discomfort, frustration, or annoyance.
- Used other than figuratively or idiomatically: see pain, in, the, ass.