In the same grand tradition of 'beef cookies', we have another strangely named food in our house. We have several types of cheese but if the kids are snacking they either have stick cheese or cheese slices. Apparently as I would offer these to DF I must have been saying "do you want this cheese or that cheese?".
So now sliced singles are known as 'this cheese'.
Btw, the beef cookies thing shows no sign of going away. We kind of expected that other kids would correct her out of this by now. Not that we were hoping but you know how kids are.