Can you make the inside of you vagina move?

Wyatt
So, I've been with a lot of people. Not an absurd amount of guys, but a hella women. I guess that's why it never came up until I started dating again after divorce proceedings started and I started seeing guys again? 
So, I can move stuff around inside my vagina. Kinda like kegels, but not. Like... I can flex muscles and move them around min various directions. I've been told it almost hurts (the dick) when I cum and start clamping down. 
Every guy I've been with says its like nothing he's felt before. I dislocated my ex-husband's thumb. My boyfriend once asked "Can I have my fingers back now?" and he frequently asks "What are you doing? How are you even doing that??" He's been with a LOT of women, and he's apparently never felt something like it. The husband was also a man-whore while he was in the marines, he said he only had sex with two other women that could do it. 
Please tell me I'm not some kind of freak. I mean, I'm double-jointed and have a connective tissue disorder, but I don't think it's related?