In the city of Dar es Salaam, Tanzania, people are in fear of a winged sex attacker named "Popo Bawa" (winged bat).  Said to be a demon who transforms itself into a man night, "Popo Bawa" is blamed for rapes of women.  When there is a supposed sighting of this demon the men will stay awake or sleep in groups outside their homes.  Some will even smear their bodies with pig's oil which serves as a sort of repellant. 

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