When an individual has Friday through Sunday off. Thursday practically ends up being Friday itself. Therefore changing Thursday to Double Friday.
And then God said on the fourth day "I shall name this day Thursday! Unless you don't have work Friday through Sunday then it shall be named Double Friday! The greatest day of all time!"
The name you give to a certain female who has the appearance of a pig. Extremely large nose, slight muffin top, wire(y) hair, and horrible odor emitting from every pore.
Hey look at Ms. Piggy walking this way, she's pretty gross looking.