A really weird coincidence...

A lot of the time at the moment, I can feel the little one wriggling around in my tummy. He's a busy lad and whenever the midwife says "is he moving ten times a day?" I just laugh - he's often done at least half of his quota before I get out of bed...
I can't however guarantee what is going to make him move (though Husbink's hand on my belly often makes him stop...he's showing signs of being a little difficult!) but there is one thing that I'm sure is just coincidence but it has happened too many times now and is frankly a little weird...
My ankles have a bit of a tendency to lock (they always have done, or for years at least, this isn't a special pregnancy issue like all the others I could witter on about) and I have to strain a little and make them crack.
And he jumps. Not just after the crack but as they crack, he jumps. He can be totally still, having a little rest but an ankle crack equals a jump. He'll then go back to sleep. My elbows click but he doesn't jump for them. Just my ankles. Crack-jump.
It has to be coincidence but it's happened so much and it is really rather bizarre!