Just for fun I thought I would let you peek into my subconscious and see just how much of the West I have in me. When I say West, I really mean Western...like Tombstone western. Chew on these for a bit...
"You got a burr under your saddle?" This means, "What's disturbing you that you're not telling me about?" It can also be used combatively with a meaning of, "Who ticked you off?"
"Get off your high horse." Or, "Don't be so freaking arrogant."
"You're beatin' a dead horse." Which being interpreted means, "It's a lost cause, dude."
"You got a hitch in your get-along?" Always said with a wry smile, meaning "Have you seen a doctor about your back?"
There you have it.