Why do people think that they have the right to wake me up?

Some people seem to think that they have the right to come and wake me up, just because they happen to be visiting mommy or JerJer during nap time. They should really learn some respect, or at least better timing.

How would they like it if I came around and got them out of bed and forced them play in the middle of the night?

I'm going to be tired and grumpy all afternoon now. I'm going to have to get mommy to take a nap as well, otherwise I'll never get back to sleep.