Someone who waits until someone has been dead for decades to laugh at something they did while they were alive.
The guy's wife was calling herself chicken shit by saying something he did was scary while he was alive, but funny years after he died. She tried to make him look like the Debo of Rock and Roll and ended up revealing how chicken shit she was.
A few more things on a chicken shit's bucket list along with fighting drunks and junkies for adventure are fighting paralyzed or terminally ill kids, fighting elderly Jews with dementia, and fighting someone with a life threatening injury someone else inflicted.
A chicken shit has to try everything at least once, even beating a 95 year old lady to death before taking everything she has.