How easily do you get startled?

EXTREMELY. My kids love it. They can be standing next to me, I'll look away and all they have to do is scream or poke me and they scare the crap outta me.

Not easy! If startled is easy, everyone would be move everywhere in everytime in the world

i get startled upon hearing birds chirp

Being startled is my only talent, sweetie.

it's really easy to startle me.

Never

At work, when it's the wee hours, dark and quiet and one of my colleagues comes round a corner suddenly, often but that is the only scenario.

Easily.

I'm very flinchy. :[

I jump at the drop of a hat.

not too easily

Hard. I don't have a factory-installed, self-starter aboard.