Arguing with an idiot is like playing chess with a pidgeon. It’ll just knock over all the pieces, shit on the board, and strut about like it’s won anyway.
Various versions of this go back to a March 2005 review of Eugenie Scott’s book Evolution vs. Creationism: An Introduction. In his review, Scott D. Weitzenhoffer said,
Debating creationists on the topic of evolution is rather like trying to play chess with a pigeon — it knocks the pieces over, craps on the board, and flies back to its flock to claim victory.