When I was younger I've definitely made fun of friends who order "girly" drinks, and have in turn been made fun of when I do it. It's pretty standard among males in my generation (X) and older. Usually happens when everyone else in your group is ordering "manly" drinks like beer or hard liquor.

It doesn't even have to be something like a cosmopolitan, it could be a gin & tonic, or rum and coke. If they're all drinking bourbon on the rocks and you order something even slightly less strong, you're going to hear about it.

Then there's the times where the first guy orders a beer, then the next guy has to trump him with a run and coke, then the next guy gets a whiskey on the rocks, so then it gets one upped with a whiskey neat. Next thing you know we're smoking crack in the alley. Just kidding about that last one, but you get the idea. We thought we were being macho, but we were idiots in our early 20s, so shrug