Out like a light...in the middle of the supermarket (We have a Mountain Buggy + One if you're wondering about the logistics of the pram).
The girl, none-the-wiser. His arm's just there to annoy her, of course.
Interestingly, we walked home (about a 15-20 minute walk) and he was still asleep. He did that weird half-asleep thing where he can answer questions but is still very clearly out of it, sort of like talking to a heavily intoxicated person, and he refused to get out of the pram whenever I asked him if he wanted to get out. So, I made dinner and only then did he get shirty with me because I was supposed to know he wanted to get out right that minute. Ugh! Kids!