Lyra and Bon Bon want to consummate their marriage by having a foal, but how can they when neither of them has the... equipment? Luckily, there's a special clinic in Equestria for just this purpose...
This is a quick little scenario I wrote quite a while ago. There isn't a whole lot of clop, or anything else, but I may expand this story in the future.
Oh yeah, another Lyrabon fic is referenced in here, but I've forgotten who wrote it. If you figure it out, please let me know so I can mention them in the description! ^_^;