A few from the US:
Hot: Completely crazy, will attempt to kill any and everything if he even hears you breathe.
Bombproof: He's practically a robot
Needs an Experienced Rider: I was way too lazy to actually train him right, so uhhhh yeah, good luck!
Just Needs a Good Home: I need to be free of this demon spawn. Take him please. He sees dead people
Perfect for young children: Too fat and lazy to carry even an average sized adult
Started Under Saddle: for three seconds before he went crazy, threw the saddle and threw a twenty minute fit, breaking three fences, two buckets and tipping over the water trough in a display of rage
Great Trail Horse: Hates ring work, will murder you if you even try to get him to set foot in the ring. (He also goes 1,000,000 miles per hour down trails..)
Friendly: to only a certain few people. If he doesn't like you you better run.
Sweet:toothed. Will eat you out of house and home, and then attempt to eat you.
Great 4H pony: little kids can ride him, but if they try to use him for any sort of fair display or basically do anything but plod along in a ring; he will kill you.
Needs a gentle rider: So old and fragile a butterfly could shatter his bones.
Off-the-track Thoroughbred, completely retrained and safe!: LIES!!! I bought him cheap because he failed at racing and I need some quick money. He is bat**** crazy.
We should treasure every moment with the ones we love, and they will do the same. And if they happen not to return your affections, you are far better off without them, as they dont realize what they're missing until it's too late.