Oinori?

We've been teaching Kai different words in sign language (at least what we make up as sign language.) One of them is "oinori" or "prayer". He knows it in Japanese. Well, yesterday, Kai was pushing his walker around the house. My mom and I were watching him and all of a sudden, he stops and does the "oinori" pose! we were both confused as to why he wanted to pray in the middle of playing, only to realize we both had our arms crossed! He must have thought..."what? pray?...well, okay...I'll do it too I guess."