Something similar happened to me when I was about 4 years old at the movies. Mum had taken me up the back because I was restless, and Dad stayed down the front. Every so often I would arrive with a handful of peanuts and give them to Dad. After this happened 5 or 6 times, he whispered "Did Mum buy the peanuts?" "NO", I answered loudly, "Someone dropped them on the floor a few rows back" and at this time the cinema was a real flea-pit! I never lived that down.