Christmas Gristle

When you receive a lot of great gifts for Christmas, or for any holiday or special occasion, then you open up the last one and it is awful. Its like when you almost finish eating a good chicken sandwich and the last bite is gristle.

Friend 1: My mom got me a PS4, a new car, and a pair of underwear.
Friend 2: Aww man you got some Christmas Gristle...