Definition: A milder version of POS; sometimes refers to a piece of junk, but may also used as an exclamation towards someone else, i.e., in online gaming, when someone sneaks up behind you and kills your character, you might type, POC! Example
You may have noticed that your lips turn purple or blue in the cold, or you may have seen a baby, an elderly person or someone else with bluish or purplish lips. In many cases, this type is caused by cyanosis, which is a discoloration of a part of the body resulting from a lack of oxygen in the blood.
2 doctors agreed: Raynauds or stasis.: There are multiple possibilities for purple discoloration of the feet but the most common are-1. Venous stasis due to pooling of venous blood in the sitting or standing position because of decrease of the calf muscle pump, 2.