Maybe Culkin's parents are "flower children" from the 60s and poppies was their favorite flower.
Btw, I'm not 100% sure that Michael Jackson actually has sex with these children.
It seems he does even weirder things with them, and I don't even have the mental capacity to imagine what Michael Jackson actually does with these boys.
Maybe it is like that Troy McClure guy from The Simpsons who is so kinky that nobody can even imagine the weird stuff he does except that it has something to do with fish.