Descriptor of the skin on the back of a freshly shaved head, where the skull meets the spine. Length of hair may be approximately 1 to 6 millimeters, but may also apply to bicced heads.
Whew, Bill just got a haircut and he's got a mad case of puppy butt.
I saw this word in a chat room in 2003. There it meant a stealthing chatter secretly carrying out the agenda of another- and generally easily recognized- chatter. I believe in the larger sense it has come to mean a person or figurehead who speaks under the direction of another...as though a child's sock toy with someone's armed jammed up their ass.