Cool Guy Has Chill day is essentially a cool guy, having a chill day. The video gained popularity, sparking remakes such as Cool Bro Has Chill Day, Chill guys have Cool Day, etc.
The video stares Cool Guy is “Just Cool Guy doin’ what he do best! P.S. If you’re wondering about cool guys “mask” Devin made it for a school project”.
The meme originated from Youtube, and has spread since it’s upload.