The old Abbott and Costello “Who’s On First?” routine is used by Theory of Knowledge teachers around the world to illustrate how language can be used to discourage understanding.

The comic Pearls Before Swine shared its own version (I’ve pinned it below). In addition, I’ve also embedded a Jimmy Fallon version, as well as the original Abbot and Costello one.

I’ve embedded both the remake and the original below: