'Cloned' means you're surrounded by attackers at all sides, nowhere to run from. Taken due to the fact in the flash game Newgrounds Rumble
, if you take the upgrade with the three heads, and you and a clone is taking both of the sides, it means a lot of damage for the victim.
Person 1: OMFG... I just got cloned in GunZ Online.
Person 2: How?
Person 1: By those kstylers. Damn, I need to know how to do kstyle.