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A boy who you wouldn't suspect to be a fuck boy as they do not fit the stereotype. However they then surprise you by being a fuck boy, hence the 'low key' as they are unsuspected and on the down low but still turn out to be a waste of your time
"Omg Becky he didnt even look like a fuckboy"

"Ikr he's a low key fuck boy"
by gracewell July 04, 2015
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Aug 11 Word of the Day
You can tell by the way she walks, she got that WAP.

You can look at her face and tell she ain't got that WAP.
by Black Don August 06, 2020
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