TMZ reports that the NYPD is wanting to speak with Desiigner following an incident that took place, especially now a video of him exposing himself has surfaced online. Law enforcement told TMZ that the rapper got into a "traffic dispute" with another driver behind him, at which point Desiigner exposed himself while yelling "Suck my dick" multiple times.
The video, which originated from The Shade Room and was reposted by DJ Akademiks, shows the driver that Desiigner exposed himself to shout homophobic slurs back. After which, Desiigner gets out of the car a second time to start a fight before the video cuts off. It's not clear if he got into an altercation or not, but he was clearly pissed at the other driver.
There was an officer at the scene, and TMZ was told they tried to intervene, but things broke up before that could happen. The video does not show if he simply flashed his underwear or went a step further, but this wouldn't be the first time he's exposed himself. A few months ago he was caught urinating in public by TMZ, although that's not quite the same as this incident, obviously.