(1968) - Hellen Keller died, didn’t you hear?
No?
Well neither did she.
Listen up, buttercup. This joke is DARK. It plays on the fact that Hellen Keller was both deaf and blind. So, the punchline is that she "didn't hear" about her own death, get it? Because she couldn't hear ANYTHING, ever. And neither could you apparently since you didn't get this joke.