A male at a club who is overly aggressive to women and comes up behind them and dances with them like they were their partner. Often these Remora like men, will then hang around the women and can't be shaken unless the woman leaves the club.
Damn, I was dancing with my wife, when this Club Leech comes up behind her and starts dancing like she is with him. I told him to get lost, but he wouldn't detach. She was pissed and we ended up leaving.