Murphy's Laws & Backpacking/Hiking

[renodesertfox]

If you know any Murphy's Laws yourself share them here. Here's a couple that come to mind just pondering the subject of hiking or backpacking:

Any stone in a hiking boot migrates to the point of maximum pressure.

The width of backpack straps decreases with the distance hiked. To compensate, the weight of the backpack increases.

And when in a mummy bag the urgency of ones need to urinate is inversely proportional to the amount of clothing worn. It is also inversely proportional to the temperature and the degree to which the mummy bag is completely zipped up. HAHA!:D