1 definition by Beefboi

When you can’t tell if a guy is fat or jacked. These people are usually always working out, always on a bulking diet, and never do cardio. You can also count on them wearing a muscle shirt from a college they didn’t attend.
Man, that guys got huge arms but I can’t tell if it’s cause he works out or he’s just fat. He’s a real beefboi.
by Beefboi June 8, 2019
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