The term 'Scary African Fly' is referring to the TSETSE fly, which is a species of biting fly found in tropical and subtropical regions of Africa. It is known for being a carrier of the disease trypanosomiasis, also known as sleeping sickness, which is a fatal disease that affects both humans and animals. The TSETSE fly is considered to be a major pest in Africa, and its bite can cause severe pain and irritation.