I was at the grocery store last night and I bought some of those Diet Snapple "to go" single packets to put in my water. It says "Only 5 calories a serving!" on the box, and then when I go to look at the nutrition label, sure enough it's 5 calories for HALF A PACKET. Who the heck only uses half a packet? What do you do with the part of the packet you don't use? It's not like these things are resealable!
It's kinda like when you get a jar of whole pickles and it tells you a serving size is half of a pickle. I mean seriously, who thinks up these things? Is it just a way to make you think you're consuming less calories than you actually are?