That's a Horse of a Different Color

Please, someone, tell me how this happened:

Don't worry, Gracie the Horse was cut out of the tree with minor injuries. Those being a few small cuts to her face she received from pushing her head into the hole. Silly thing. I think she was on something or at least had had too much to drink. Have you even woken up after a long night and found yourself in this situation? I hope not.

I leave you humming "Beer for my Horses."