call in fat 

When, after a weekend of overindulgence, you have to call in fat to work to go to the gym all day.

"After demolishing a twelve pack of beer, several rum and cokes, two pizzas, and half a carton of ice cream, Susie had to call in fat to work so she could hit the stairmaster all day."

call in fat by fattyboomer August 30, 2011