The man has a point. Hiding your gender isn't the best way to go about connecting with people. Sure, it pays to be careful with personal information, but I don't think that revealing your sex will point anybody to your address or social security number.
If you want to get tickled, I recommend asking any of your female friends in the real world. If by "tickle session" you're referring to something that finishes with an orgasm, then you'd have to go a professional dom, prostitute, whatever. But I would probably go for one of those Asian steam bath and massage places. You know. The old "Steam and Cream." They'll probably tickle you.