Inazawa (Aichi-ken) - Hadaka Matsuri - 18 February 2006 (Naked Festival)
Bare-bottomed men aged 23-43 ensure their good luck for the coming year by crowding the streets of Inazawa City in the hope of touching a naked man! Since 767BC the Naked Man, aka Shin-otokoa, has walked this seasoned route through thousands of sweaty, desperate men to reach the Kounomiya Shrine.
source :
http://www.istc.org/sisp/?fx=event&event_id=29827