I was only gone for a day or two...

I'm pretty sure they're talking about the Eddie Murphy special.

I only make it through the first fifteen seconds of the Pornhub one.

Nah, it's a French movie released in 2016 but I guess it's called Grave in French. Basically some vegetarians (I thought they were vegan hence the reference that no one seemed to like) turn into cannibals.

https://en.m.wikipedia.org/wiki/Raw_(film)