Among a group of hard drinkers, the one who drinks the most and serves as the example of "hard drinker" to the other hard drinkers, making them think that they don't really drink all that much.
Even though Dave is plainly an alcoholic, he doesn't think he drinks all that much, and he doesn't, compared to the bar fat boy over there.
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Some who is obese in size and is quite frankly fat.
Can be used as someone's name.
Josh is a fat boi.
Fat boi (Josh) come here.
by Kurtishasabigdick July 2, 2019
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Its the definition of a person I met yesterday and I started calling him fat boi Jay
OI FAT BOI, GO GET THE FRAGMENT YOU PIECE OF SHIT
by Myabsi November 17, 2019
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cute creatures mostly from minnesota or sometimes germany depending on there body structure.
" i cant wait to go to the zoo and look at the little fat boys."
by jOnah finklestein February 22, 2007
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ben turnbull aka lard arss, fat boy or ice burg
by boner June 29, 2004
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