Grenade of Grenade
The real name for the Call of Duty series. The only people who don't acknowledge this as the series' actual name are the hardcore fans, who protect their sacred game above all else, and are ignorant to reason.
Person 1: "I love Call of Duty!"
Person 2: "Don't you mean Grenade of Grenade? I hate that game."
Person 1: (insert rage-filled rant here)
Person 2: "Don't you mean Grenade of Grenade? I hate that game."
Person 1: (insert rage-filled rant here)