Ever try it? It worked for me. Just nuked them for 10 minutes, then put' em in zip lock bags, and one in each pocket kept my hands warm for over three hrs.

Then what do you have left? A cold hard potatoe?? lol I just spend a few dollars every year and buy some Hot Hands and Hot Feet. Open them up, shake them, stay hot almost all day most of the time.. then when I get home I nuke the potatoe to go along with my venision

Well, if you brought along sour cream, butter, bacon, chives and all that you could have lunch right before the tater got cold. Brilliant idea.