When one buys a large amount of things on sale or gets an abundance of free stuff, it is considered Indian Christmas
Person 1: "Why the hell did you bring all these shampoo samples home?!?"
Person 2: "Because it's Indian Christmas!!!!"
Person 1: "Since when?"
Person 2: "Since I brought these home! Aaaand I bought all of this manager's special donuts!"
Person 1: (palms own forehead) "Oh God..."