(Photo: Hatena Jobmate)
Mukonage is an annual event held on January 15 at the Matsunoyama Onsen hot spring resort in Tokamachi, Niigata Prefecture, Japan. The first son-in-law to marry a girl from town the previous year is picked up by the men of the town, then tossed down a snowy hill. This is followed by Suri Nuri, during which people rub snow and ash on each other's faces to promote health and prosperity.
-via Dave Barry