When I was less than two years old I stuck some corn up my nose. (Hmmmm... a familial fascination with corn, perhaps?) My mom called the emergency room to see what she should do, and they said, "Have her blow her nose." My mom said, "She's only sixteen months old!" (or however old I was at the time--somewhere around there.) The guy said, "Most children that age can blow their noses." and my mom asked, "Do you have children?"
I don't know when children usually learn the fine art of nose-blowing, but Kate's almost three and she can't do it. I've tried to demonstrate, but when she copies me she just kind of makes a coughing sound. Not happening. At least she doesn't have any corn up there that we're trying to get out.