There’s a really engrossing article in the LA Times, "Kandahar’s Lightly Veiled Homosexual Habits", from 2002 on the coexistence of widespread homosexual practices with Afghanistan’s infamously rigid "traditional" values.
The most interesting thing is how they do not define it as homosexual, even though it sounds like some of these guys are very actively engaged in what in the US would be considered a gay lifestyle. (Only the recipient, as it were, is gay.)
This macho doublestandard isn’t unique to Pashtoons, of course. I’ve heard of similiar attitudes in Mexico, for example.