How invented fellatio?

Fellatio, or oral sex performed on a male, does not have a specific inventor as it is a sexual act that has likely existed for millennia across various cultures. Historical records suggest that it was practiced in ancient civilizations, such as the Greeks and Romans, where it was depicted in art and literature. The act has evolved over time, influenced by social norms, religious beliefs, and cultural practices. Thus, it is more accurate to say that it developed organically rather than being invented by a single individual.