LOL! This story confirms something I heard when I lived in Kreuzberg, Berlin.
There’s tons of Turks in Kreuzberg and Neukölln districts, and if you’re there for any length of time, you will inevitably see them drinking Ayran, a Turkish yogurt drink.
One time, after I’d gotten to know some of my neighbors, I asked them why they’re always guzzling the stuff, and the answer I got, “Don’t you know? Yogurt makes you a sex machine; your girlfriend or wife will think you’re a pornstar if you drink it!”
I thought he was just joking, or possibly drunk. Guess he was right; I learn something new every day, and usually from the unlikeliest of sources.