What are some good horse jokes?

Q: Why did the pony have to gargle?

A: Because it was a little horse!

Q: What did the horse say when it fell?

A: I've fallen and I can't giddyup!

Q: What did the teacher say when the horse walked into the class?

A: Why the long face?

Q: What do you call a horse that lives next door?

A: A neigh-bor!