Giant, gangling monsters, Bogeymen have the unique ability to hide behind anything, no matter how small, and do this out of choice. They are very shy and hate to be seen, because this usually results in people getting a case of the screaming ab-dabs and running for the hills. So if you're in a bar and you see a door, chair, bed or other similar item walk in and strike up a conversation with the barman, don't worry, its just a bogeyman. That or you've had way too much scumble and are really going to regret it in the morning.