Popobawa is variously described as either a ghost or ogre with gigantic bat wings and a giant penis. He is sometimes thought to be a shapeshifter who looks like an ordinary human during the day. His presence is usually announced by the sound of scraping claws on their roof and a sharp, pungent smell. Different from other incubus legends, Popobawa primarily attacks men and only in their own beds, resulting in many men sleeping outside in streets or on porches after recent reported attacks. He attacks men as they sleep, overpowering them, holding their face to the floor and [SIZE="3"]sodomizing them for up to an hour[/SIZE].
magandang panakot yan sa kaasaran mong lalake, sabihin mo atakihin ka sana ng popobawa hehehe.

from:
http://en.wikipedia.org/wiki/Popobawa