Snipers/railwars/raywars.
If your ping is above 50, 100 or even 150, 200, then all you can do is just shoot in the air and hope that your lag will make your bullet land in somebody's face. How is that fun? Some people spend years mastering the "lagkilling" and play 1shot-1kill maps everyday. I don't understand what is wrong with them. Maybe it's a disease? It would make more sense if they played those maps with ping below 50 or switched to arena maps where high rate of fire compensates high ping.