I know that! Didn't you hear Yotsuba hitting the ball?! It went like this!

[This time when she headbutts the journal she quite expertly but completely accidental flips it over to video so the journal is able to catch a nice close up of her forehead before she sits back down.]

So you just waved and said hello? Ohhh, that really is normal. That's really normal for the grandpas and grandmas. They should start spirit five-bumping!