What Happened To The Dibs?

Daniel went the store for me late last night and brought home a treat for the kids to share. After everyone had a few he said to put it away, and there was still some left at that point. Well later that night he went into the freezer pulled out the Dib's and puff just like that it was empty. He asked if I ate them, "nope I didn't", then who? Kirsten confessed the next morning and said she didn't get a lot because she was playing web-kinz, so she finished them off. But the part I don't get, why put the empty container in the freezer. Whatever.