A short series of non-interconnected, one-shot clopfics where Chrysalis has in her possession a penis capable of inserting eggs into ponies. She does so on three: Zecora, Pinkamena and Trixie. There have been requests for more—by the ever-friendly folk at Derpibooru—which will be added over time.
The idea has been shamelessly taken from an image by the lovely Zajice... I'm gonna level with you folks here, hold up my hands and say I honestly have no idea either. I just saw it and thought it might be fun to write, I didn't know what I was getting into!
And to clarify, no, oviposition is not my fetish but at the same time I do understand there are people who enjoy it.