Jubilee my horse Stitch has done that too me too!
The countless number of things he has done to me :) lol but I love him
1. We were at a show over the summer and it had started to sprinkle during the class before us but the went ahead with our class so im in the ring trotting around and all of a sudden he flops on his side with me on him as soon as he started to go down I flipped my foot out of the stirrup and and got off he rolled right in the middle of my western pleasure class with my show saddle and all my tack. When he was done he just stood up and looked around and had to have been thinking "why is everyone staring at me?"
2. When I did all the training on him I wanted him to move of the slightest pressure of my leg, well he does taht and is great but now if I have someone who is a beginner rider come out and ride and they use too much leg on him he will lift his back foot up and kick them in the back of the calf!!! Doesnt matter what he's doing, walking, troting or loping he has done it