A smooth criminal. A boy who graduates in high class status. A man who knows how to play games but still seem sincere. Someone who loves the women but does not fall in love.
A zaglafrag is a person who is really really bad at playing any sort of games, but think they're the best player in the entire galaxy, and decided to flex their "Gaming Capability", knowing well a newborn monkey can beat them.
Player 1: OMG! I'M NOT BAD, THE INTERNET JUST SUCKS!
Player 2: *Whispers to player 3* he is such a zaglafrag.