A lie to tell someone when you want/need to sneak off to have a cigarette or to get an extra break from work or any activity.
Kenny, would you mind watching my line so i can go warm up my coffee?
Slang used in the food and drink industry when a person’s coffee has become cold, and the customer or server asks to refill their cup with coffee from a hot pot.
Ma’am, can you warm up my coffee by pouring in some from that hot freshly made batch?