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A guy who always has to one-up everything anyone says or does. If you say you ran a 5 minute mile, he ran a 4 minute mile. If you say you went swimming this weekend, he'll tell you he's a certified lifeguard and swims every weekend. If you say you made coffee this morning, one-up guy will tell you that he grew, harvested, roasted, ground, and brewed his coffee. Usually the one-up explanations are long-winded, boring, and self-serving. Most of the one-up explanations are probably lies.
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