Betcha haven't done this!

So today i saw poop come out of a caterpillar butt (if they have butts). We have 31 caterpillars in my classroom. They are much more disgusting than I thought that they'd be. For a week they have been doing nothing but appearing bigger each morning. They have hardly even moved. Then today clearly pooping right in front of our eyes. I was surprised that the little boys in my class who giggle when someone says fart, poop or butt were so disgusted to see the caterpillar poop. They just like to talk the talk, deep down inside they are still little boys.