Not entirely academic, but I just recently figured out the share/not to share label on Icebreaker candy. The "share" is on the little opening, while "not to share" is the big opening. That seems backwards, as "share" should be the bigger opening, right? The joke being "I'm only sharing one or two" for the small flap, and "all mine" for the larger flap where getting more mints is easier. Turns out there is a hygienic background to this labeling. You would think "share" should accompany the larger flap, but hygienically speaking, you don't want people's dirty fingers infecting all your candies, thus "to share" is the smaller flap where you can shake a candy or two onto the palm of their hand.