The correct course of action...
You are not talking to LW. You are talking to, let me remind you, "a group of very irate (biological, conventional, mainstream, cis, heterosexual, not-quite-sexually-liberated) women". You try telling them to think of the dick-owner as a lesbian and in the best case neither them nor any of their friends set foot in you gym ever again. In the worst case you'll find yourself talking to cops in the near future and to a large bunch of lawyers soon after that.
There are some long lists of false beliefs that programmers hold. isn't because programmers are especially likely to be more wrong than anyone else, it's just that programming offers a better opportunity than most people get to find out how incomplete their model of the world is.
I'm posting about this here, not just because this information has a decent chance of being both entertaining and useful, but because LWers try to figure things out from relatively simple principles-- who knows what simplifying assumptions might be tripping us up?
The classic (and I think the first) was about names. There have been a few more lists created since then.
Time. And time zones. Crowd-sourced time errors.
Addresses. Possibly more about addresses. I haven't compared the lists.
Gender. This is so short I assume it's seriously incomplete.
Networks. Weirdly, there is no list of falsehoods programmers believe about html (or at least a fast search didn't turn anything up). Don't trust the words in the url.
Distributed computing Build systems.
Poem about character conversion.
I got started on the subject because of this about testing your code, which was posted by Andrew Ducker.