User blog comment:Mikel6718/Anybody Care to Explain the Disturbing Ending of Egg Monsters from Mars?/@comment-4037231-20190629071605

I feel the meaning you are supposed to get is that the Egg Monsters impregnated Dana. For what reason or exactly we don't know, this is just an assumption based on the part where they put a blanket around him. The ending is pretty dumb and random but I imagine it means this. Twists that have little connection to everywhere else are common in this series and this kinda counts but there is that slight connection you can assume.

It is indeed super gross.