It's the "Got my mind set on you" dance, and they're jumping so much on the bed till the bedsheet came off.
And they're wearing jackets cos it's getting very cold at night now, 4-8 deg Celsius. It has already started snowing at the higher altitudes cos the mountains are turning white. They are very pretty now cos the top half is white, the middle is red and yellow (autumn leaves) and the bottom's green and brown.
If you noticed they keep facing the foot of the bed, it's cos my mirror is there (hanging on that wall) and they are so egoistic, they keep wanting to see how they look when they "dance".