So it's okay if someone their size does it, is that it?

[it's eminently unreasonable of him to snap, and he knows it, but social exhaustion and confusion make him cranky at the best of times even when strange babies aren't a factor. He puts both hands around the baby eating his hair and thrusts it in Siegfried's direction. Yes, his braid is still firmly in its mouth.]

If you're such an expert, you take charge of them.