I don't know why, but I've always loved this bit

This skit didn’t originate with Abbott and Costello, but I enjoy their version the best. Its origins go back to Vaudeville and the likes of Harry Steppe, Joey Faye and Samuel Goldman. Later on, Abbott and Costello did a neat variation on the skit, called Bagel Street or the Sasquehanna Hat Company, for their 1950s television show.