A fork of Rural Dictionary
1.Attempting to reopen a topic or subject that is already resolved 2.To waste time doing something that has already been attempted
"If you're trying to get back with Ryan, you're just kicking a dead horse. He got back together with Becky."
Pointing out a dry joke or horrible pun after it has already fallen flat.
Teacher : Yeah check it out Student : Ok I will Teacher : Get it? Check it out, for the chess tournament Student : Your kicking the dead horse sir