1. Don't pay bills when tired online. You will accidentally hit the go back button several times instead of the confirm button. Then you get to type in all the information again....and again.....and AGAIN!! You would think I would learn after the first time.
2. When your 4 year old learns to whistle, you will be overjoyed at his new found skill. Then after several days of nonstop whistling, the enjoyment fades.