Sleep-Dialing

Yesterday morning I awoke to find the cordless phone next to my pillow. I'm about 95% sure it wasn't there when I went to bed, and I have no recollection of doing anything with it during the night. The caller ID didn't show that I received any calls. Contemplating whether I might have made any calls, I realized I know exactly four phone numbers - my home (though sometimes I'm fuzzy on that one!), my cell, my work, and my grandma (because it's been the same number all my life). So if I made any calls, it would have had to be one of those. I rely very heavily on my cell phone contacts list, which is why I'm always screwed when I lose or break a phone. I wouldn't even have a home phone if it wasn't saving me money on my cable/internet for 12 months. After the 12 months is up I plan on getting rid of it.