Here is a picture of some guy doing the farmers walk, I figure a picture was the best way to explain this. Pick the weight up and start walking until you drop them. The morning after the first day i did this exercise I felt like i got hit by a car, my whole body was in pain. (its no big deal if you dont have have fancy handles just use HEAVY dumbells
<img src=http://members.aol.com/jonestom03/images/fw%20walk%20back.jpg>