Do angels yawn?

Every once in a while I have these offbeat thoughts.

I had a thought a few months ago, but yesterday was the first time I verbalized it to a good friend: I wonder if some of us live such safe lives that our guardian angels are yawning?

I wonder if our guardian angels get bored. I wonder if they are just waiting for us to step out in faith and do something that lets them spread their wings and fly!

All I know is this: I don't want to be guilty of causing angels to yawn!