Events will occur at the most inconvenient times, similar to Murphy's Law.
While waiting for a phone call forever, if you hop in the shower, they will call... Dalby's Law
If expecting company, go to the bathroom and they will show up... Dalby's Law
The waiter will always ask for the order when you are on the phone... Dalby's Law
If you have been waiting for your food for a while, go to the bathroom and it will show up... Dalby's Law