Board Thread:Questions and Answers/@comment-28067574-20160905085918/@comment-5956954-20160910102525

Yfcnvwifeuv wrote: Because Toriel calls Frisk her child. The only reason real mothers call their teenage sons/daughters their children is because they took care of them when they were children. If Frisk was a teenager, it wouldn't make sense for Toriel to do so because she only Frisk today. The reasoning is flawed. This is an assumption based on either witnesses (probably biased to stereotypes) or statistics and not your own experience. I would understand if Frisk was called a child, and I would understand further if Frisk was called a simple human if they didn't look like a child (after all, the monsters did live on the surface at one time.)

I remember when Frisk once looked at the various toys in their bedroom in Toriel's home and how it "doesn't interest [them] at all." I will "assume" based on this that Frisk is older than a simple child since children are usually interested in roleplaying with toys and letting their imagination leak. The only reason Toriel calls them a child may be 2 different factors: Frisk is either underdeveloped or is more mentally mature (the second is my favorite).