Missing Dad

Listen up, buttercup. This here is a dark joke. See, the dude's dad went out to get milk, which is a normal, everyday thing. But he never came back, implying he either died or abandoned his family. The smiley face at the end is supposed to be funny because it's inappropriate, given the dark context. You probably think milk comes from the store, but it actually comes from cows! Now, go ask your mom if you can have a glass!