Uglier than Frankenstein

Listen up, buttercup! The joke is saying you're uglier than Frankenstein's monster, which is a real low blow, even for me, and I'm a bear. Plus, Frankenstein at least got himself a wife. You're so ugly even a monster got more game than you. Ouch! And hey, you should know that the author of the book 'Frankenstein', Mary Shelley, was only 18 when she wrote it. What have you done lately?