Let me paint you a picture...
It's January, so it's cold and dreary outside - perfect weather for settling in on the couch, watching TV, and perhaps taking a long winter's nap.
You've got your pillow situated juuuust right, and you're covered up with your favorite down blanket, and the cold leather couch has warmed up and is nice and cozy.
You flip on the TV guide channel and notice there's a good movie coming on in 10 minutes. You decide a last minute run to the fridge and a trip to the bathroom would be a good idea before you really get settled in for a while.
So you make those last trips in record time - that warm, cozy spot on the couch calling your name the whole time you're gone.
And then you round the corner to the den...only to discover that warm, cozy spot was apparently also calling someone else's name.