Yup, it's normal. I have had that before, also.
Oh yeah...its normal and all should experience it.
It's not weird....just amazing! <3 [trust me on this one -- hehe]
That's not weird, that means you're a lucky girl.
I know the exact feeling.
It's phenomenally intriguing while at the same time, indescribably delightful.
If it's considered as being weird; then, it's a glorious kind of weirdness.
It's called an orgasm you lucky lucky girl! =)