rude slang An expression of anger. A: "Wow, you're a lousy mechanic, Ben." B: "Hey, your car's running, isn't it? Up yours!"
up yours!an exclamation expressing contemptuous defiance or rejection of someone. vulgar slang
ˌup ˈyours!(taboo, slang) an offensive way of being rude to somebody, for example because they have said something that makes you angry: ‘Go and cook me my dinner.’ ‘Oh, up yours! Do it yourself!’
exclam. Go to hell!; Drop dead! (Usually objectionable.) I won’t do it! Up yours!