n. a group of young men consisting of four young men: Joel Coleman, Tyler Holloway, Mike Mason and Joseph Hill, who's origin to this day is unknown.
adj. amazing, sexy, cute, cool, exciting, athletic, loving.
look out Beth! those are the 510 boys, they will make you fall in love.
Tommy, you think you have what it takes to be a 510 boy? Think again, those guys are awesome.
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