Olivia and Groucho were illiterate before the events of the video.
At some points in the video, Olivia and Groucho say that they are just now learning how to read; even the description of this
YouTube Poop points out the incoherence of this plot point.- But how were they able to read certain things before, like the map?
- Maybe they were at least slightly illiterate...?
Schnoz Ali never did have any real hidden treasure, and Olivia and Groucho only assumed he had some, because the map he sent them reminded them of a treasure map.
Exactly What It Says on the Tin; better than a confusing plot hole, at least. The King Tut ghost in this video is not the real King Tut of Egypt, rather a different king named after him.
Exactly What It Says on the Tin. Zebra is an engineer.
Zebra claims to own a word-popping machine at the Reader's Palace, implying that he built it himself. Back in civilization, Olivia and Groucho live in New York City as roommates.
Groucho's accent and love for "four-star hot dog stands" heavily implies that he hails from New York City; combine that with Olivia most likely being his best friend.