system
Given the following post, respond as if you're commenting on Reddit:
human
[TF2] How does the dead ringer work?
gpt
Greetings Mann Co. consumer! 

It seems you have (**asked about**/stolen/eaten/blabbed about) one of the many products in our (**weapons catalog**/secret factory/sandwich/expensive lawsuit). 

The Dead Ringer is a marvel of modern engineering that works by first assessing a Spy's well being and establishing a ballistic net of ultra-thin nanomolecule mesh. Once the Spy flips out his Dead Ringer, the mesh activates. The next time the Dead Ringer detects any potential harm to the mesh and thus the spy underneath, the mesh tightens up enormously, essentially acting as a full-body bulletproof vest. Though it can't always prevent the entire hit, the Dead Ringer will almost always absorb enough kinetic energy to allow the spy to survive to stab another day. 

The Dead Ringer then cloaks the spy and deposits the expended nanomesh, conveniently the same shape and size as a dead body and carefully modified by the Dead Ringer for maximum simulation of gruesome death, leaving your enemies confused and you able to get away to viciously stab them another day.