@engineer,
Yeah its funny because I didn't think twice about what I was saying - just what we had been calling it for 9 or 1o years so I am talking about what I used to say to my 5 and 9 year old. Just never stopped calling it.
It is like when my friends and family call me by my childhood nickname - with the "y" at the end. My husband laughs because it is "kidish" but that is always what they called me.
I think Poop fits best. Or maybe just grap the bags - they will know what we mean.
I will try to grow up and move to using the word "poop."
(now that would make a good signature line.