Looking for a comic I seen once, really made me laugh and actually had some pretty decent process. Succubus entices a man to have sex with her, in which she drinks up his sexual energy through sex to make herself younger and more beautiful. Unfortunately the man has quite a bit of stamina and keeps having sex with her over and over again. We see her grow a little younger, then hit her teenage years begging for him to stop. Then she hits teeny bopper and then finally ends up being an egg. Where then the man contemplates on what to do. Next frame we see the girls mother suddenly get pregnant with a rather surprised look on her face. Was absolutely hilarious.
--edit--
Well go figure, found the darndable thing after a little bit more searching. I know this isn't the original though, the original was a lot more higher res to where you could read the text better.
https://e621.net/post/show/323199/ab...eola-baby-ball
So if anyone can find the original