"Brazilian Flopper" also known as professional Brazilian football player "Neymar" is a term joked by many football fans and social media for Neymar's outrageous dives while playing professionalized football. It is also known to be criticizing him for overreacting on a dive, even though it could be a minor dive, thinking that Neymar would be "overreacting".
John: Do you know who ghosts in Saudi and is a Brazilian Flopper?
Chris: Who is it?
John: ITS THE BRAZILIAN NEYMAR!!!