In his 11/13/14 strip, Tartulli breaks the wall in a curious way. (click on image to enlarge)
Yes, that's Mickey Mouse as Steamboat Willie cruising under the panel borders that have morphed into a drawbridge. I originally thought that Tartulli was referencing the premier of this ground-breaking cartoon. But it was first shown on November 18, 1928. Not the right day, and not even a significant anniversary (86 years).
But still -- a clever way to make us aware of something that always disappears from view when we're reading the comics; the panel border.