Sometimes when playing online games such as Quake or Team Fortress 2 a player will connect with a very high ping. This is generally due to the crappiness of his Internet connection, and it is generally difficult to play these games with a high ping... HOWEVER...
If the connection has a lot of jitter, causing the player's ping to go up and down, packets to be dropped and so on, the player may end up moving around the game in a very jerky manner. Some games deal with this better than others, but you may end up with a high-ping player who is nearly impossible to hit because of this jerking around.
In this particular edge case, he becomes a TRUE "high ping bastard", and may be able to lay waste to the rest of the server if using weapons that don't require high accuracy, like grenades, the plasma gun or rocket launcher.