This screams (no pun intended) something your not funny boss is going to pull you into his or her office to watch. You’ll need to pretend to think it’s funny and also have something interesting to say as well, so be prepared. Maybe go with “That video is so KILLER!!!!” or “This really SLAYS me!” or the classic “What a knee STABBER!!!”
This is sure to earn you some brownie points with the boss you hate and who most likely hates you. They might ask you over to their costume party this weekend, don’t go. Make up an excuse, go get drunk and forget you ever saw this or work in that hell hole.