I accidentally pooped on our neighbors floor
That feels very embarrassing! What happened, exactly?
It is embarrassing when it happens on accident
If it was an accident, I am sure that your neighbor would understand, and I do hope you cleaned it up the best that you can so that there will be no conflict that may occur with your neighbor.
Screw them. I think they deserved it.
I do not think anyone deserves to have their floor be filled with poop, and I think you don't really mean when you said that. Visit them again and apologize to what you have done and clean the poop if it is still not cleaned.