Stamps have calories?

Every time you lick a stamp you consume 1/10th of a calorie.

Image from here.

I found this fact really weird to think about.. So that's 1 calorie for licking 10 stamps, and you're not even eating anything! So if you licked 100 stamps that's 10 calories.. (I know the maths is simple, but I'm #justsaying) Still, that's such a tiny number of calories it really won't make any difference to anyone, so it is a completely pointless fact (that's what I love about it!) And to be honest, you probably burn off at least 1/10th of a calorie by lifting the stamp to your tongue, licking it and sticking it on the envelope.. Not to mention the writing on the envelope as well.. So all in all, you probably don't burn many calories and you don't consume many either but it kind of balances out.. Your best bet is to not think about the calories when writing a birthday card. That's the best option. ;)