Hormones

Kate notices some red bumps on Suzy's legs.
Kate, "Mom, what are those red bumps on your legs"
Suzy, "I don't know, I wish they would go away"
Kate, " Maybe they're there because of those things that make girls grow mustaches"
Suzy, "Do you mean hormones?"
Kate, "Yeah! Those 'hings" (she often doesn't pronounce the T on things).