Poorly Named Naps

If it's called a "cat nap," why can't I get my cat to leave me alone when I'm doing it? "Catless naps" seem far more effective.

Could you nap if you had to worry someone was going to take your glasses and throw them down the stairs or behind the bed? Me neither.

Although you know, when I'm not trying to nap, he's really quite good at it.