Several chastity devices require a penis piercing - usually a frenum or Prince Albert - as a secondary locking mechanism. Other forms of body piercing are common to femdom or BDSM scenes. Others are bucket list items, or things people wish they were brave enough to get. And, thanks to the internet (and the proliferation of smart phones), there are plenty of videos of people getting actual piercings. Take a look, if you've ever wondered what it would be like: Guy Getting a Prince Albert Piercing - Hot or Ouch: Edited as a news segment, a guy volunteered to get the glans of his penis pierced on camera, in the Prince Albert style
In contrast, the footage of a guy Getting His Knob Pierced appears to be purely amateur home video. The guy getting pierced apparently invited all his friends to tag along for an impromptu "watch" party - and many have their smart phones out to record it. Not entirely clear on what type of piercing he's getting, though. The video description says its a Prince Albert, but it looks more like an apradavya to me Nope