Chester pooped on the potty!

This morning, Chester had some naked time between his PJs and day clothes. I was getting Arthur his breakfast when Chester said "uh oh". I looked over and he was looking down at a puddle on the floor. "Poop" he said. I put him on the potty in the bathroom where Ryan was showering. I got Arthur his breakfast and mopped up the puddle then checked on Chester. He was signing all done and doing the little verbalization he does (it sounds like 'bye nuh"). Ryan said he'd peed on the toilet so I picked him off the stool and put him on the floor. I went to flush the toilet and realized there was more in there than pee- surprised, I asked Ryan if he had forgotten to flush the toilet this morning… He said no and leaned out of the shower to peek in the toilet. I look down at Chester's bottom and saw a little residue there from a bowel movement. Um... Chester did you poop in the potty??!! "Huh." He said, nodding (his version of yes). Holy smokes! We had a mini celebration and Chester smiled proudly. It was a great way to start off the day!