In online games, and in FPSs especially, somebody hangs around near an enemy spawnpoint and kills players as soon as they appear, rendering them lame.
Spawn camping is not to be confused with normal camping, which is a legitimate tactic, unless you are camping right on top of a powerful or lame weapon spawn point, in which case it is not a legitimate tactic and is called 'whoring'.
An online FPS (first person shooter) player who positions himself in a way to immediately 'kill' a player who has just (re)entered the game.
An online FPS (first person shooter) player who positions himself in a way that prevents a player from leaving his beginning (spawn) area without 'dying'.
BLU Heavy, BLU Soldier, BLU Medic, BLU Pyro, BLU Scout, BLU Demoman: spawncamps
RED Pyro: FUCK YOU STUPID DUDE
RED Demo: spawncamping = skills
RED Pyro, Demo, Scout, Heavy, Medic: leaves
Another RED Scout: spawns from second spawn:
Red Scout: OH YEAH!
BLU Sniper: headshots scout
Red Scout: fuck you
entire red team: leaves