It's, um, kind of an ADULT question. That I'm asking for no reason, especially no reason having to do with writing erotica on LiveJournal.
Have you ever had sex in, say...an alley, or a parkade? Is it a logistical nightmare? (I mean, assuming reasonable weather. Obviously you don't want your bits out in -50.) And how could this be accomplished by a hetero pairing if the woman is wearing pants rather than a skirt? Just, um, curious. Message me if you have any thoughts on the subject.