1. Someone who has ruined thier chances in life and has caused most of their own problems.
2. Sometimes used in heated discussion as a substitute for "shutup".
1. Jon is a fuckup
2. Fuckup jon! You're starting to annoy me!
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1. Body part.
2. Added to the end of an insult for originality (similar to adding "mangy" to the beginning of an insult)
1. She has a fit body but a ugly face.
2. Fuckface, fagface, shitface, dickface, cuntface, whoreface, mangyfuckface, mangydickface, mangywhoreface etc.
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