Because I'm a Woman?

Today during lunch in the conference room, where the more interesting and pleasant of my co-workers eat together almost daily, I let slip what I knew was an amusing remark. (note: I like to think every once in a while I can be trusted to have an amusing remark up my sleeve.)
I let it slip, and everyone laughed quite heartily, even more heartily than I expected. By now I can read this group of co-workers pretty well, but sometimes my inanity surprises even me.

But the remark itself was not the funniest part.
The funniest part was when a female co-worker, relatively new to the firm said, a bit surprised and impressed, amidst the laughter, "I think you said something funny the last time I ate lunch in here."

And that made me laugh out loud.