Some people are fans of the artist Drake. Other people are dog lovers.
The Philadelphia 76ers are a basketball team which also has some fans.
Sometimes those three things intersect and leave you with a video of Franklin, the Sixers' dog mascot, doing his best impression of Drake in his new "Hotline Bling" video.
I can't say I know what is going on in either the original or the parody version but I do know that it is a thing that exists on the Internet. Why these things exist? That's for you to figure out.
The Sixers were not the first sports team to dial up the Hotline Bling Express, however.