Child 1 is studying for an anthropology test. I am being Helpful.
Child 1: Dating methods,
Me: [avoids talking about chat up lines and clubbing. Am very helpful]
Child 1: Radiometric
Me: That's where they check out their Pandora stations
Child 1: [natters on about something anthropologic]
Me: If it's mostly classic rock they're probably in their fifties.
Child 1: [natters rather more loudly]
Me: Hey! Child 3! I'm helping Child 1 with its studying!
Child 2 enters and proceeds to point out all the snerkable words there are in anthropology - surprising how many there are. Child 1 bravely soldiers on, substituting Homo Ergaster for Homo Erectus.
Child 1: ... [anthroisms] ... Oldewan ...
Me: [delighted] That sounds like a Jedi!
Child 1: ... occipital bun ...
Me: That's where they liked to pile their hair!
Child 1: [patient explanation of occipital bun. Which I ignore]
Child 1: Out of Africa... no interbreeding...
Me: I don't think that works. I think we would have laid everything that came across our path.
Child 1: [with enormous patience] I think I'm done being helped with now.