Don't breathe too loudly because this guy will freak out.
Jumpy does not even begin to describe this man who lives in a constant state of gullible terror. And it doesn't help that his coworkers are always busy dropping things from ceilings or hiding in cardboard boxes. We'd pity him and his likely erratic heartbeats if his reaction weren't so hilarious.
On the positive side, he must never have the hiccups since he's always scaring himself back to normal.