To compare/transform someone to one of
Dr. Suess' many characters, such as: the cat in the
hat, horton, or the
grinch.
Guy 1: "Man if you
don't be careful I
will seussify you!"
Guy 2: "I was just kidding man!"
Guy 1: "That's it! I officially seussify you to the
grinch!"
Guy 2: "NOOOOOOOOOO!"