Have a character who always says "...OF DEATH" after describing things. Example: "The silver and black cerial spoon... OF DEATH." Or "Hand me the yellow pencil... OF DEATH."
Bonus points if it's your MC.
Double bonus points if they always say this after describing an extremely trivial thing. It can never be "the giant sword... OF DEATH".
*Looks confused* what's so weird about that? My sibs and I used to do that regularly.
Actually I think we did "Of Doom" mostly. Like "The Frying Pan of Doom".