Catch a large dog and pull two of the large pointed teeth to the side of the jaw.
With an electric drill, carefully hollow out each tooth a little at a time, periodically checking for a tight fit over your own.
Once a tight fit has been achieved, fill each empty hollowed out cavity with super glue and fit over your own. Make sure you have them aligned properly before inserting over tooth, as the super glue will instantly set.
Then, go brush and gargle and get ready for a rowdy evening of blood and terror.