I wonder if this could be one of those situations where the social rules say that you shouldn't be 100% truthful. Maybe most NTs would come up with a way to make their work on the project sound important without caring whether they were giving an accurate description of what it was about or not. Kind of like padding out the answer to an essay question.
Maybe your answer seemed funny to the others because it was 100% truthful, and as a result it was very short. Kind of like what happens on Doctor Who when the Doctor tries to explain some concept and realizes it's too complicated to go into:
Quote:
Rory: "How can we be outside the universe?"
The Doctor: "Imagine a huge soap bubble, with a smaller bubble clinging to the side of it. Well, it's not like that at all."
Another possibly amusing aspect of giving a short answer in this situation is that it might give the impression that you aren't worried about what others think. (That's actually a very healthy thing, but it can be funny if it's unexpected!) An NT might be thinking, "I'd better make this project sound really important and make my explanation at least 5 minutes long, so the boss knows I'm working hard."
An Aspie who just answers the question truthfully might sound very casual and relaxed. To others, an Aspie can seem very serious most of the time because of how much thought goes into each thing we say or do (even though I think most Aspies have a great sense of humor). A casual answer creates a reversal of expectations, which is one of the foundations of humor.
Maybe a little bit like Mr. Data from Star Trek making a truthful observation that actually comes across as an effective scolding:
Quote:
Q: "How can he order me around like that? I mean, who does he think he is?"
Data: "Geordi thinks he is in command. And he is right."
That line makes me chuckle each time I hear it, because Data is not trying to shame Q-- he is just expressing the bare facts of the situation. In fact, Q's own childish behavior is shameful in itself, and Data's dispassionate explanation revealed that more effectively than an intentional insult would have.
(Hey, can you tell I'm a sci-fi fan?)