(dec)ayed + cor(roded) = decroded. Used in Napoleon Dynamite, quite possibly the best film in the history of cinema.
"Napoleon, it looks like you don't have a job. So why don't you get out there and feed Tina?"
"Why don't you go eat a 'decroded' piece of crap?"
A subtle hybrid of "decrepid" and "corroded." See Napoleon Dynamite.
You decroded piece of crap.
similar to corroded. not exactly though. it has more of a not so specific definition.
"tore-up". ugly or dirty looking.
something or someone that is old and worn down or just gross.
"that girl's looking decroded today."
"she didn't wear any makeup and didn't even match her clothes."
"eww. i am not touching that. it looks decroded."