This is not to 'rain on anybody's parade'. But if you head off looking for these sights at the real Mardi Gras, you might be disappointed - although you could probably head to the Latin Quarter and see scenes like these during that time (and also at other times of year).
The scenes in the 'mardi gras exposure' were not likely taken during Mardi Gras - at least, they are not really part of the Mardi Gras festivities. Although it's all in good fun, the drunken antics are not part of the annual Mardi Gras festivities (in New Orleans), which are based on a religious observance, of course. In reality, the real Mardi Gras does not take place on Bourbon Street. So it is rather a widespread myth. However, despite the 'myth', it can certainly be fun to be a part of the after-parade events that happen on Bourbon Street. Fortunately for those of us who enjoy seeing them, the cock flashing and drunken antics can occur at many other times of year.Although fun and wild, and as such, it allows both the bead-giver and all of the casual bystanders too, a glimpse (or even more) of cute guys' dicks or their half-naked bodies (lower half - as they let their jeans and boxers drop), it is not really what Mardi Gras is. However, the myth persists. It's more likely to be an impromptu street party that spontaneously occurs during Spring Break or other holiday weekends in the old Quartier in downtown New Orleans. Tens of thousands of party-seeking college-age young people descend on the French Quarter on New Orleans during Spring Break, and "boys gone wild' is the name of the game.