Today, however, T. came over and started to climb up on me, looked slightly confused, and then threw up. Fortunately missing me and even more fortunately, almost entirely hitting a very easily cleaned toddler chair. The rest landed on him, particularly his socks. I picked him up and took him to the bathroom intending to clean him up. This was _really really really really brilliant_. Quite possibly the second or third smartest decision I have made as a parent (breastfeeding and cosleeping were still smarter. I recognize the long-term wins when I have them). Because as we entered the bathroom, he threw up a second time. Much, much, much more copiously. Onto the floor and the stepstool, both of which are pretty easy to clean, which is good, because that stuff stank. It was still recognizably apple juice and egg and a little breastmilk and not much of anything else. Dunno what happened. He wasn't able to nap today, which may or may not have been related. The blowout poop somewhat earlier might or might not have been related, too.
After stripping him down, I cleaned up the mess and then threw all affected clothing into the diaper pail which I'd emptied recently. (Note to self: consider keeping diaper pails around post-toilet training for similar purposes.) I then tracked down _every_ recently used sippy cup, boiled the silicone valves and put the cups and tops in the dishwasher.
I'm at a loss for what else to do. Hopefully this is a one shot deal, whatever it is. Sure made me queasy having to clean it up. Dunno if that was sympathetic, or me having a less bad version of same. R. also had a lot of reflux today.