Perhaps it was Satan. Not to sound spooky or anything, but somebody in my church claimed to see Satan in her house or something, and shadows of Satan
were dancing on her walls. I think a week later she moved to a different house.
Lol, I can just see satan doing the salsa in the living room
But to the point, I think that your friend had to much to drink. I know there are a lot of stories about half man/half goat creatures, but they always
just stayed stories...
And Satan, oh well, I don't really believe in that dude

, but who knows, maybe he did see Satan... I hope you could tell some more details, or ask
your friend to give a more detailed description oh what he saw.