Who knows?! That's the best part! It can mean anything but if you tell them your explanation, they WILL throw themselves onto the floor and pitch a fit of you're wrong because "you didn't get it and now I'm stupid!" Kids, man.
Discussion
They are some craic let me tell ya.
I have 3 (23, 20, & 7). They were all like that. Jokes never made sense before they could read. The youngest was the worst with stuff like "why did the dog sit by the cat? Because purple fur can make you laugh with chocolate! Bahahahahahahahah!"
Like, the fuck?!