Skimmed Milk Difficulty

Alright, listen up, buttercup. You see, skimmed milk is milk with the fat taken out, right? The joke is that instead of skimming the fat off the milk, you just huck the whole cow across a lake. It's funny because it's a dumb and absurd way to make skimmed milk, and you are also dumb for not understanding it, you cotton-headed ninny muggins.