Old West Bar, men playing poker. Lone Ranger comes in. "You're all under arrest for gambling!"
The poker players say, "Fuck you!"
"But I'm the Lone Ranger. These are my silver bullets, and that's my horse Silver!"
"Well then fuck you and the horse you rode in on!"
Girl: Fuck you and the horse you rode in on
Boy: What horse?
Girl: (Points at other girl) That fucking Horse
2) an elevated form of fuck you, usually used when someone continues to ride you in a conversation.
if you did it my way it wouldn't screwed up
fuck you and the horse you rode in on