Defenseless against the swing's powers

Sometimes when I am a little sleepy but can't seem to relax Mary will take me out and sit on the porch swing. William and I really can't help but relax when we are out there. It is really hard not to fall asleep when we swing. In fact sometimes I do. The last thing I remember I am swinging outside and then....wham....I wake up in my bed. Tricky!