Definition from Wiktionary, the free dictionary
- IPA: /ˈbʌtˌhɚt/
- (slang) Overly annoyed, bothered or bugged because of a perceived insult; aimlessly offended; having an overly sensitive ego.
- Don't get so butthurt; it was just a joke.
- (slang) Annoyance because of a perceived insult.
- (slang) Upset because of a perceived injustice.
- He's just full of butthurt because I insulted him.
Derived terms 
(slang) annoyance because of a perceived insult