Derogatory, said of a male (boy or man) who behaves like a slut and is thus an acceptable masculine synonym; said male is sleeping around frequently, disregarding and/or playing with the emotions of the opposite party just for the sake of adding notches to their bed post.
Not to be confused with manwhore, which is the term for a man who is easy like a whore, the fuckboy's usual target.
I can't believe you slept with a fuckboy like him. You know they're only in it to get laid.
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