Favorite sex position?
Ok Anon,
I'm assuming this is an Everlark question? Yeah. I'm just going to assume that (the alternative would just be weird). So, I think if I had to guess I'd say in my humble head canon that Everlark probably enjoys girl on top the most. Here are my reasons.
1. Peeta is really good at bringing out Katniss' sexy side. He's the only guy who makes her feel both secure and desired (in all the books). I think she would be very comfortable with him, especially after their relationship matures a bit.
2nd reason: Peeta's leg. I think most of the time after a long day of standing, and working Peeta (especially as he gets older) might want to use positions that take the strain off his prosthetic. Not that Peeta wouldn't totally be capable of smashing Katniss in pretty much whatever position struck their fancy because he's strong as all get out, even with just one fully functional leg. They would've no doubt gone through that honeymoon phase where they tried lots of stuff. But I think in the end they would pick a few favorite standbys and most of the time use those positions.
I might be way off base but that's my guess.