It may sound ridiculous, but I'd teach mixology and restaurant skills. So many bartenders in gay clubs are hot, but HORRIBLE bartenders who couldn't make a drink if their next Red Bull depended on it. I must say that while I never had the body to bartend in the gay clubs, I could kick their butt with a shaker and a speed pourer. Being able to make a good martini is a great life skill to have (IMHO) and I'd like to help those tainted by sour apple and wildberry thingys acting like a good cocktail.
And let's face it: some folks just don't know how to act or order in a restaurant, and an even larger number don't know how to tip appropriately. I don't limit this to gay or straight, but wouldn't it be nice to hear "ooh, I want the gays!" when a party walks in instead of "ugh, they'll drink a lot, make me run around, and leave a crap tip." I confess that I was one of those servers that didn't want the gay tables for that very reason; they were a pain in my a**, and not in a good way.
Yeah, I'm a little bitter about it, but I'd take the bitterness and use it to help others.