Jeffrey. Knock knock, Who's there? NOT JEFFREY
An arm and a leg edit: slightly improved punchline
Cancer
Lean Beef.
because she had Supercalifrajilistic Osteoporosis
Why did Sally fall off the swing? Because she didn't have any arms. Knock Knock. Who's there? Definitely not Sally. Why did Jimmy drop his ice cream? He was hit by a truck Why didn't the truck turn out of the way? Sally Was driving
Because she has no arms. Knock Knock. Who's there Not Sandra.