Someone who is a lazy good for nothing employee unless a supervisor is around, that is when they act like they were working hard and have been for hours. Then they go back to their usual laziness after the supervisor has left.
Spec. Brown: Man, did you see that spot lighter today?
Cpl. Jones: Private Snuffy again?
Spec. Brown: Yep, Snuffy was goofing off in my room then saw Sgt. Mac coming down the hall. The spot lighting son of a gun started working when Sarge came in and went back to doing nothing when Sarge left. We need to give him a Soap Party.