It is likely that you pulled a muscle. That pain lasts for weeks. Buttox is the biggest muscles you see!
I personally don't think your can sit on your butt because you are sitting on the surface that your butt is On, so you are not really sitting on your butt
gluteus maximus, or your butt
You're sitting on the bottle.
A butt injection or a butt lift.
if you were holding in a bowel 'release' or sitting on something hard or uncomfortable.
cause u been sitting to much
sitting too long, menstrual cramps, bruises, or running a lot can cause your butt to become sore.
It can be caused by a few things. One of which is not scrubbing your butt in the shower; another is sitting or sleeping on your butt while damp or sweaty. I have them and their nasty.. :-$
secretary butt- it is the wide,larger than average hiney that appears from sitting on your bum all day at work.
Exercise
Running, winning and the occasional butt plug session.
Sometimes they are peeing.