In a first person shooter, the act of spawning in a strategic position which allows you to pwn uber nubbage. Although no one can control where they spawn, hackspawning is often a strategic advantage for the team who is lucky enough to do so. It is often favored to hackspawn close to the enemy's flag, KOTH position, etc.
d000d!!11 I was totally hackspawning on some nubs yesterday! I sp4wn3d like 3 feet from their flag! ZOMG!!!11 HACKSPAWN!!!!
In a first person shooter, the act of spawning in a location which is on the opposite side of the map from all the enemy players. Often looked down upon because one has to traverse all the way to the other side of the map in order to pwn uber nubbage.
d00d!!11 I was pwn1ng nubs in CTF in halo 3 and I scrubspawned! we lost so i am pissed!! SCRUBSPAWN!!!