Sometimes if my girl has an itch, she can not reach-she licks her nose-like she is in a hurry,licking it! She was doing that one day, and she needed her "girly parts" cleaned. I used a baby wipe and cleaned her. She was happy, and no more licking like that. Now she just backs up to me, to clean her! She does not have a tail pocket, but if your dog does-it may itch-or need to be cleaned. Bullies can't reach alot of spots that other dogs can. Or some dogs have "compulsive" episodes. I don't know if your dog does this very often as a habit?
I heard that you have to put the video on utube first. I don't "do" videos!