Because she didn't have any arms. Knock knock. (Who's there?)...not Sarah.
Spits*
They fall for things hook line and sinker!
Bi-polar
Because she hasn't got arms!
Here's mine. Knock knock. Who's there 911. 911 who You said you'd never forget
I didn't know you could yodel!
Sarah kept silent.
Because she had no arms. Knock-knock! "Who's there " Not Sarah.