LOL Well, yeah. I have been "snuck up on" before. Had someone come up behind me, and tap me on the shoulder. Scared the living life out of me, but no blood was spilled. 
I'm just a very skiddish type person. But, all kidding and joking aside, I'd probably turn around and see it was that person, and figure out what they needed. (after my heart went back to a normal rythym 
)
