Tom Wilson is an actor. The character he portrayed in the Back To The Future movies was Biff. People seem to have difficulty distinguishing the two.
They also have difficulty with recognizing that he's a human being that may want to be left alone when with friends and family.
And when he's performing standup gigs, maybe he wants to let the material stand for itself as opposed to having it constantly compared with his acting performance in the iconic trilogy.
So, in order to help other understand his position in the quickest way possible, he provides this FAQ (Frequently Asked Questions) for you should you inquire about his Back To The Future past.
And here's the hilarious video presentation of this very item.