..okay...who ate it?

Starving I was...so waited until mid afternoon, decided on a cripsy low fat low everything piece of cardboard to eat for the snack - except - it has chocolate.. hmmm.
Anyway laid it out, went to answer the phone and came back and one of my so called colleagues had eaten a chunk out of it. When accused they all sat with their cheeks puffed out like hamsters denying everything - still don't know ate it - but be warned I will find you out!