system
Given the following post, respond as if you're commenting on Reddit:
human
[Dungeons and Dragons] Can I use Polymorph to reproduce with Non-Humanoids?

Hey there everyone! My name is Firnagallad the Level 7 Wizard, and let's just say I'm *really* looking forward to level 8. 

But there is one question that the Academy refused to answer me (repeatedly). Under the effect of the Polymorph spell, can a human produce offspring with a normally nonviable non-human? Will those offspring be viable? Will they be 'half-human', or have any interesting morphological traits?

For the inevitable follow up question, don't worry. 1 minute/Level is *more* than enough.
gpt
Thanks to the Book of Erotic Fantasy, this *does* have an answer. There are some weird wizards out there on the coast.

If your current form has a penis, yes, you produce sperm and can impregnate someone normally. If your current form has a uterus, you need to remain polymorphed for the whole 9 months (the baby is lost if your transform back), but if you can manage that it works.

Either way, the baby is a hybrid between your true form (i'm assuming human?) and the partners true form, regardless of what form you were in during intercourse . This can produce some weird new creatures, depending on what you fucked, and is at least theorised to be behind some of the strange hybrids out there

So it seems your dream can come true! Shine on you crazy diamond.