Did I sprain my butt?!?!

I don't know, but it reminds me of the Simpsons episode where Bart broke his tailbone and had to wear a butt cast :P
You should watch it to cheer yourself up xD

you probably did something to your tailbone, because one time this girl kicked me REALLY hard and it pretty much cracked my tailbone and it still hurts every once in a while( and it happened a year ago) so maybe you should go to the doctor and see if they can do something to help so it wont hurt or something in the future :P
or you can just let it heal? i dont know....lol

You can't sprain you butt, but you probably just bruised it. You might have heart toe tailbone though if it's still hurting later, you may have to go to the doctor.

i broke my tailbone, tat may have happened to you check out my arm, it is called
I think I broke my arm, what should I do under this same category.

Its most likely your tailbone you may have bruised it. Even if you broke it theres nothing anyone can do you just have to let it heal

yup relax til heals