The Yatta costume - a loincloth with a leaf on it.
"Each member of the Happatai team wears one fig leaf only just like Adam, the first man. The unit was formed out of interest in cheering up Japanese people who are suffering from the worst recession in recent history. They have been performing on TV for Fuji Network. Their comical song goes something like, "... one leaf is all I need. 'Cos i feel so lucky to be alive..." "