"Chinpokomon" is a spoof based on the Japanese word "Chinko", which is slang for penis. By adding the "po", it becomes a slang word for "little boy's penis". The whole word together means "little boy's penis monster". I watched this episode with my Japanese girlfriend. It took about 5 minutes for her to stop laughing and explain it to me. Considering what it means, I doubt you will see it in a Burger King combo meal.