That's not... Wait, smell that... Yes... It is...

"Honey... Smell this..."

Phil, "No. I'm not smelling that."

"No, really. Smell our bathroom hand towel."

Phil, "No. I'm not smelling that."

All senses say... "It's poop" ... 

It looks like poop, it smells like poop, it is poop.

Poop - On our bathroom hand towel. Awesome.