1. Person who always complicates orders at fast food resturants particuraly McDonalds.
2. Someone who will make large or complicated orders near closing time at fast food restuants particulary McDonalds.
Customer: "I'll have a McDouble hold the mustard onions and burger and add chicken mayo tomato and mushrooms."
Employee: "What a McDoucher."
Empolyee 1: "This lady ordered thirteen cheese burgers and we close in five minutes"
Empolyee 2: "She's such a McDoucher"