...this stuff, related to the annual
Mardi Gras celebration. To be honest, that Wikipedia link does a better job of explaining it than I can since I've never been. From what I understand though, Mardi Gras celebrations are concentrated for about two weeks before and through Fat Tuesday (Mardi Gras in French), the day before
Ash Wednesday during which time the population of New Orleans more than doubles. Popular practices include wearing masks and costumes, overturning social conventions, dancing, sports competitions, parades, etc. The beads wrapped around the bike there thrown from floats to parade-goers. Anyway, it's all something to add to the to-do list :)