the left-over cookie

[I'm at a friend's place. There is one cookie left in this container that needs to be emptied and everyone seems to be too full to eat it. Finally my friend, Pete, takes it with a reluctant expression on his face and slowly starts eating it.]
Me: You know, it's a cookie. You could have just put it on the table and eat it later.
[long pause as he stares at me and gnaws on the cookie]
Pete: There is logic in what you are saying...
[slowly takes another bite of the cookie]