Fuckboy is a term typically reserved for males who are overly confident and tend to play the field. A fuckboy is notoriously casual, emotionally disconnected and has multiple partners with little attachment. While people self-identify this way, it is also a derogatory (or even just descriptive) term to refer to others.
He’s giving “fuckboy vibes” implied the person mentioned appears to be interested in sex and short term engagements.
Origins of the Term
The term is said to have been circulating in AAVE (African American Vernacular English) slang before being introduced to a larger audience in 2002 by the rapper Cam'ron in the song "Boy, Boy." The term was an insult, meaning a man who was weak, who was useless. By around 2015, the term had been appropriated from AAVE into the wider population and had taken on the meaning noted above.
