A "poo baby" is a term that appears to have different meanings depending on the context. Here are the two most common meanings found in the search results:

1. According to, a "poo baby" is a term used to describe a hypothetical scenario where a man has a sex change and then gives birth to a baby that has been artificially inseminated in their anus. It is important to note that this definition is not based on any scientific or medical fact and is not a real phenomenon.

2. The term "baby poop" is used to describe the feces of a baby. The appearance of baby poop can vary depending on the babys age, diet, and health. For example, a newborns first poop, called meconium, is a dark green, tar-like substance made up of amniotic fluid, mucus, skin cells, and other things ingested into the uterus. As the babys diet changes, the frequency, color, consistency, and smell of their poop can also change. Breastfed baby poop is typically mustard yellow, green, or brown and has a seedy and pasty texture. Formula-fed baby poop is typically a shade of yellow or brown with a pasty consistency that is peanut butter-like. Red blood in baby poop can be a sign of a milk protein allergy or a bacterial infection. Constipation and diarrhea are common poo problems in babies.

In conclusion, the term "poo baby" can have different meanings depending on the context. However, the most common meaning of the term is related to baby poop, which can vary in appearance depending on the babys age, diet, and health.