Deader n shit 

Anything that is obviously dead and has been dead for a while.

Bubba told his friend Ned that Cooter, his yella dog, got hit by a truck. Ned asked Bubba if Cooter got hurt. Bubba blubbered "Cooter was deader n shit."

Deader n shit by Bigalfa1 July 27, 2008

deadernshit 

Something so dead it could literally be a pile of dung extract.

*Horse falls over dead* The owner walks up to it and says, “welp, my horse is deadernshit.”

deadernshit by Boots7 November 4, 2020