Baby Poop

I have been trying to figure how to describe the new brand of poop that Nicholas has been selling over here. When we first brought him home he was producing a winter formulation: diesel. Then, he quickly, if not prematurely, switched over to a summer formulation: gasoline. Now that we are entering the festive months of Primavera, he has switched over to a more appropriate formulation: Pesto (I can just taste that fresh basil, pine nuts and parmesan!) How can I describe this new version of poop? I imagine a closed-circuit video of me strolling along a crowed subway platform in NYC. I pause, look around, and slowly pull out a zip lock bag with what appears to be a dirty diaper in it. I slowly slip on a small gas mask and goggles, then open the bag and let the diaper slip behind a trash can. I walk away calmly but expediently. 5 minutes later, would be passengers start collapsing, with foam coming out of their mouths :-/