That's right â your parents could be to blame for your dark circles. There are hereditary conditions that run in families that can lead to darkness under the eyes, explains New York City dermatologist Dr. Bruce Katz, Director of the Juva Skin & Laser Center in New York. This is very common in people with Mediterranean backgrounds..
OBO means 'Or best offer' mainly used in classifieds, or websites such as craigslist. craigslist posting: 'Selling Laptop for $400 OBO'.
Quick Answer. According to MedicineNet, NPO is a medical abbreviation that means nil per os, or nothing by mouth. It means that a patient isn't allowed any food or drink for medical reasons, as stated by Wikipedia. Continue Reading.