heard in the office

We have rearranged the offices for the Children's Equipping Center and I love our new set up. I was sitting at my desk working on the curriculum i am developing... in a moment of frustration, i said to myself: "this is not as easy as it looks!" To which Hollie asked; "What?"

"Writing a curriculum based on the Apostolic Prayers for four and five year olds."
She laughed... and laughed... and laughed... in fact as I left the office she was still giggling...

I don't get it... what's so funny?