These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Pokey the Penguin
Genius Bonus: Lots of 'em. For example, this strip has one for geometry fans and one for Pierre Corneille readers. note Google "oloid" and "tyrant sparing none", respectively.