say "Cheese!"

Sebastian loves cheese. Recently he's taken to these little cheese cubes called 'party cubes.'
Apparently, string cheese is out and party cubes are the 'in thing' to have in your lunch box at snack time. No doubt the smiling red cow on the cheese cube label had something to do with
line of thought:

"What's butter made of?"
"Butter is made of milk."
"What's cheese made of?"
" Milk."
(a minute of silence)
"Then what's a cow made of?"