Ball Python Explosive Peeing?

I was handling my ball python Lucy, and was startled by something, probably an object falling off a shelf. I jumped, and Lucy peed on me. But it all came out at once, and fountained, covering my rug and body. It was like a bomb! Does this happen often with BPs, and was it because I startled her?

Thanks,
apple2

It happens more when they are trying to get away and they really gotta go. I've been explosivly shart on before it's not fun. And it stinks.

I've never experienced this with my balls, but it happens all the time with my blood! It's mostly a defensive thing, or maybe she just really had to pee.