Widely disseminated science joke from the early internet:
An engineer, a physicist, and a mathematician find themselves in an anecdote—indeed, an anecdote quite similar to many you have no doubt already heard.
After some observations and rough calculations, the engineer realizes the situation and starts laughing. A few minutes later, the physicist understands too. He chuckles to himself happily, as he now has enough experimental evidence to publish a paper.
This leaves the mathematician somewhat perplexed, as he had observed right away that he was the subject of an anecdote, and deduced quite rapidly the presence of humor from its similarity to other anecdotes; but he considers this anecdote to be too trivial a corollary to be significant, let alone funny.