My belief is that when someone refuses to tell you what they're doing, they're probably doing something pretty mundane but personal, so the best way to get it out of them is to presume that they've done something outlandish, like had to get out of a relationship via grenade launcher, or fighting crime in a rubber suit. Often, they'll just tell you to stop you from guessing.
If not, just pick the funniest assumption and use that. It's not historical truth, but it's entertaining enough to think about, and if you're a psycho fan, it doesn't really matter anyway.
- Akhmed Al-Fayyed
Writer of Bhag
and professional sojourner.