Man: Cow milk is drinkable.
Other man: How do you know that?
Man: *smiles with milk all over mouth*
Other man: John...h-how do you know that!
Evidence of Drinkable Milk
Categories
Explanation
Experiment
Explain Bear
Listen up, you dummy. The joke is that John is covered in milk, implying he didn't just drink it, if you catch my drift. It's kinda crude, but I know you like that.