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.
Raynaud's Phenomenon. Sometimes also called Raynaud's disease or Raynaud's syndrome, this condition causes a lack of blood flow to the extremities. When blood is not flowing properly into the lips, it results in a lack of oxygen (cyanosis), and causes a blue or purple color. Raynaud's is treated by avoiding possible triggers: smoking, caffeine, certain medications, and exposure to cold.