Actually, I was more concerned about the glass, since I'm sure he broke the little vial open by biting it. I hadn't thought about poisoning.
Whatever. I'm still pretty peeved at him. We were supposed to go to his gymnastics class, but when I told him it was time to get ready, he said, "I pooped."
So I told him to change his pull-up then, and get ready. He played. I told him he'd better clean up and get dressed. He whined. I reminded him one more time, saying that if he didn't get ready, we would not be able to go to gymnastics. He whined and flopped around like a dying fish on the floor: "I cayant!" (WTH???

)
I said, "Fine. Obviously you are choosing to stay home then." I left him in the bathroom with a bag and some wipes. An hour later he came to me and said he wanted to go to gymnastics now... and he was still wearing his poopy pull-up.
I told him his class was over, and led him to the bathroom to get changed, standing there until he finally took off the damn thing. GRRRRRRRRR!!!