Yes. I get this on every dose to varying degrees. In the early days, it happened hard core with MM, but now it doesn't happen as much when I dose with L, but it always happens.
I've referred to it as the "Snap, Crackle, Pop"
I've only heard this explanation of sensations from cluster heads, I don't think this happens to "normal" people.
It fascinates me, would love to know the physical mechanisms in play and what is actually happening.