Cancer
Mine would have to be Why did sally fall out of the tree? Because she had no arms. Knock knock. Who's there? Not sally.
Your arms have gotten sore.
A: A happy bear!
a bell.
Second-hand smoke!
Cancer.
A white Christmas.
He had been illumi-naughty
Me: Twitter. Padre: Wow, if I had a nickel for every time . . .
Because they were vaccinated as children.