LOL...those are good.
How about :
"in season"...a thousand pound mare with PMS
"bomb proof" has never been actually tested with a bomb, but shies at everything else
"shies" a multi-talented horse that can either jump 5 feet sideways or 5 feet straight up or turn 180 degrees quicker than you can blink an eye, scared of some imaginary goblin seen only by the horse
"horse shoes" metal semi-circles nailed to the hoof that make big dents in your body when kicked
"horse trailer" a conveyance used to move a horse from point A to point B. Many times said horse will refuse to get back into the trailer at point B, usually 50 miles or more from point A
"tack" horse paraphanalia that owners are addicted to buying but seldom use 90 per cent of
"filly" what you get when you are wishing for a colt
"colt" what you get when you are wishing for a filly
"babysitter" a horse so old you have to feed it ground, soaked feed because it has no teeth, it's legs are so arthritic it can't move, therefore safe to put a child on
"lame" what happens an hour after you buy the horse and bring it home
"buck" another multi-talented horse that puts his head between his front legs and throwing his rear skyward, while running at the same time, effectively blasting the rider off it's back
"cross country" a horse sporting event that begs the question, "Who is dumber the horse or rider for participating?"
"steeple chasing" see the explanation for cross country
"road apples" The by-product of expensive grain and hay, sometimes used as fertilizer and usually deposited in a freshly cleaned stall or barn aisle two minutes after horse has been brought in from an all day turnout
"horse trainer" a person you send the horse to while you are in the hospital recuperating from a ride on your multi-talented horse. Said trainer will often comment, "Gee, I know this horse. I wish you would have called me before you bought him."
"water bucket" a vessel that some horses think is a horsey toilet. This deposit usually occurs about 5 minutes after the bucket has been washed, disinfected, filled and hung back in the stall.
"stud fee" a generally over inflated price that an owner thinks his stallion's service to a mare is worth. The stallion has no such ridiculous notion of his sperm's worth and would happily donate it at no charge.
"barn help" individuals hired to clean the barn, feed and water the horses, but seldom show up when needed the most
Yeeeh hawww, let 'er buck Roy!