Has anyone ever noticed dancing butt cheeks?

I've noticed that while reading enema or MedFet stories the muscle in my butt cheeks tighten and relax fairly quickly and not always together. It looks like they are dancing for joy. Has anyone else had this happen? ???

Uhmmmm not involuntary...I can do a mad butt cheek dance when I wanna! 😁

GG, if that's the case - then that is the ONLY thing that will get this guy to dance

Go on and Dance with yp bad self GG! I'm watching 😉

It is more subcounciously than involuntary. If I think about it I can stop but it starts again as soon as the story takes my focus off stopping them.

Hmm...interesting...I only have one sided twitches when I'm very tense.(but not my in butt haha!) I'll pay more attention next time I'm excited. Do you have nerve twitches as well?

Since I don't know what nerve twitches are I probably don't have them. I really like to have labels for things that are different and my GP has never said that one.