Neapoli-Tans are unintentional, though many pranksters of South Beach Florida have been known to Neapoli-Tan and streak through Miami Beach attacking innocent bystanders. For the latter cases, most Neapoli-Tans are with a Strawberry torso, Vanilla legs, and of course, Chocolate genitals.
The origin of Neapoli-Tan is widely disputed. Though many theories are still debated, some have traced it's roots as far back as the early 1700's, in modern day Kansas, where the indigenous tribes of Omaha and Ponca used the concept of Neapoli-Tan to gain the affection of the local village Princess. They would often use the phrase "Mein bukha hun duba choco" which translates to "Look at my Chocolate genitals", to seduce the native women in their arms.
In 2007, Neapoli-Tan's became subject to internet fame after videos were uploaded on JewTube (Hebrew sister company of video sharing site YouTube) depicting a new form of tan pranking known is "Tan in the Can" where uploaders would Neapoli-Tan their asses for a chance at winning $10,000, funded by viral company "The Search for the Best Damn Cans in the Land". JewTube was closed after Company founder Bernie Weisman was linked to a prostitution ring, registering under his alias "Not Jewish Guy"
See also: Neapolitics
Guy 1: Why were you looking at his genitals?
Guy 2: Wait. Your name's Drewsh?
Man 2: Yeah, I saved Strawberry for last, since it's my favorite.