But flooded with questions about geeky or personal topics, I'd probably play down my own geekdom the same way I would say that me having a boyfriend is "a secret".
It's none of the rugrats' darn business... and it's something I know is generally looked down upon (and is something that I myself sometimes pass judgements based on).
My classrooms run based on how the kids relate to me. If I ally or associate myself with one group or interest-base, I've just lost the rest of them. That's why I pretend to give a crap about baseball... even though I don't: half the boys in any given class are on the baseball team.