But other than their political movement, there seems to be little commonality.
Gay men prototypically want to be upper class women; it's often been pointed out that Sex and the City, which was written and directed by gay men, was really about four gay men.
Lesbians, on the other hand, sometimes seem to aspire to be lower middle class men. They drink beer, and look askance at anything that smacks of pretension.
Gay men don't resent women, in fact often become their "best friends." They tend not to befriend gay women, though, as they find nothing appealing about either their lifestyles or sense of fashion. Gay women are boring, dreary, dumpy and frumpy, the antithesis of things gay men like.
Gay women rarely become men's friends, and certainly never their "advisers" on matters of fashion and romance. When it comes to men, they exude a constant undercurrent of resentment.
Most lesbians don't even seem to particularly like gay men. They're just hunkered down into their own "womyn's commune."
Gay men are into plastic surgery, steroids, and bodybuilding. They flex, primp, pose, preen and wax.
Lesbians almost never get plastic surgery. They're not into femming themselves up, or becoming glamourpusses. Rather, they seem to let themselves go as a matter of principle, and regard any sign of superficiality as a character defect. (When was the last time you saw a lesbian on a diet? Or on a stair-stepper?)
The flagship lesbian sport, softball, doesn't exactly sculpt the body.
Gay men are into fashion, both men's and women's.
You'll almost never seen a lesbian who pays nearly as much attention to her outfits, makeup, and accessories as does the average transvestite.
Gay men speak with great animation, their voices conveying the full range of emotion and nuance.
Lesbians tend to speak in hollow tenor monotones.
Show business is the apotheosis of what turns gay men on, which is why the Oscars are so often called the gay Superbowl.
Lesbians have no such equivalent, merely the constant drone of the Public Broadcasting System.
Gay men have elevated "naughty" into an art form.
Lesbians never veer from the politically correct script.
Gay men are known for their great senses of humor.
Lesbians are, well, lesbians.
(I hadn't started out intending to make this pro-gay men and anti-lesbian; but somehow that's how it turned out.)