A pierced lip is a sore that is open making it easier for infections to set in. Touch as less as possible and when you touch make sure your hands are clean. Most workplaces do not approve of piercing do take that into consideration while getting it done. Do be careful when you eat.
A V-shaped valley forms through a geological process called erosional downcutting in which a strong and fast moving river or stream erodes or cuts a path through rock. A V-shaped valley may also be referred to as a river valley.
A very deep river valley may be called a canyon or gorge. The terms U-shaped and V-shaped are descriptive terms of geography to characterize the form of valleys. Most valleys belong to one of these two main types or a mixture of them, at least with respect of the cross section of the slopes or hillsides.