What We Do in the Shadows has gone on to become a cult classic, thanks to Taika Waititi’s success, and the hit TV series.
In the meantime, you can head over to Reddit to see the What We Do in the Shadows Easter Egg, which is where the secret Taika Waititi role was originally found.
While that alone is pretty crazy, it appears that it fits into a larger Easter Egg pertaining to What We Do in the Shadows.
Since Waititi delivers the line, it is surely a reference to What We Do in the Shadows.