Well you could weigh yourself first, and then after you have done your business – you could weigh yourself again. I guess it just all depends on the person and how much you went.
Or You could buy a feces scale…
www.diet-blog.com/archives/2008/01/28/the_human_poop_scale.php You can go to this website and see a picture of it…it states…
From the bowels of the patents database comes patent number 1493222 – the feces scale.
It’s the ultimate scale for the most weight obsessed person.
Richard O’Neills patent – signed 29th March 1922 allows waste to be weighed. It is an attachment that fits into the toilet bowl and accurately weighs your outgoings.
After noting the weight, a simple depression allows the waste to be flushed away forever, and you can walk away 8.23 ounces lighter.