I think I might have battled some gangsters for some magic toothpaste or something. In the car on the way back from that battle, I am with a dog that switches back and forth from being my dog (large) to being a dog that my dad sometimes dogsits (small). He and I are competing a little over the tube of magical toothpaste (I don't remember why it was important. I think it changed flavor, but that was not why it was important). When we arrive at my house, we go inside. He goes to his kennel to rest and I go say hello to my mother. She sends me back out to the car because I did not bring in the toothpaste. After looking to make sure the dog is still where he was, I go back out. I get the toothpaste out and notice that the dog, as my dog, has followed me. For some reason, he wants to go into the trunk of the car (which is big and open to the rest of the car and where he usually sits). I help him in because he is old. Around the side of the car, I pause to do something. The dog, as the other dog, appears and I decide to set him on top of the car because he is small and I can. He moves to the edge and I jokingly put my head against the car, like a platform on which he can stand. The dog defies the laws of physics to use me as a staircase somehow.