The Ruler of Varvona wanted a fruitcake, but his subjects showed up at his castle with a Christian instead.
And he said: "NO, NO, NO! YOU IMBECILES! NOT THAT KIND OF FRUITCAKE!"
Alright listen up, numbskull. The "Explain Bear" is here to break it down for ya. So, a fruitcake is a type of cake, ya see? But, someone who is "fruity" can mean they are gay. The ruler wanted the cake but his dumb subjects brought him a gay person instead. You probably don't even know how to bake a real fruitcake, huh?