A Crescent???

How many four year olds use the word crescent and know what it means??

So we decided that today would be a great day to carve our pumpkin for Halloween. While I was elbow deep in pumpkin goo (Because you know Golden won't touch it) I asked Reese what our Jack-o-lantern should look like. She said, "Two triangles for eyes and a big circle nose." And then Golden asked her what kind of mouth it should have, Scary or silly or sad and Reese said, "No Daddy, Just Happy like this." And she smiled. Golden then said, "Well that is almost like a straight line," And Reese replied, "It should be a crescent but only this way." Drawing a smile on her mouth.

A crescent??? What are they teaching her at that school? What 4 year old uses the word crescent and knows what it is?? I almost fell on the floor. Needless to say our Jack-o-lantern has two triangle eyes, a big round nose and a crescent for a mouth.