sup check
A sup check is when the immediate intro of a YouTuber (or other platform) is cut out of every video uploaded and clipped together.

Sup checking somebody can be used to track the progression of somebody’s mood, feelings, current state of mind, as well as hair style over time.

The term was coined by Ethan of h3h3 when discussing a video of Philip DeFranco where every intro, featuring sup, is clipped together.
Hey did you hear somebody sup checked PewDiePie.