The Penis Sheath
From answers.com we get this explanation:
The koteka, horim, or penis sheath is a phallocrypt or phallocarp traditionally worn by native male inhabitants of some (mainly highland) ethnic groups in western New Guinea to cover their genitals.
Would it behoove the gay Asian esthete to have a koteka mounted on their walls? If you’re into S&M and rubber, it might be an idea to hang one in your play room, to be reminded of the origin of your brand new rubber penis sheath. Otherwise, I would not recommend it. Verdict: NOT