Because she didn't have any arms. Knock Knock..who's there..Not Sara.
200 ft: Aaaaaaaaa, bump 2 ft: Bump, aaaaaaaaa (Yes, it's an old, really old joke. Surprisingly haven't seen it here, yet.)
I'll start it off: Two antennas met on a roof, fell in love and got married. The Ceremony wasn't much, but the reception was excellent.
Cause she's got no arms. Knock Knock. Who's there? Not Sally.
Because she had no arms. Knock Knock Who's there? Not Sally :)
Because she has no arms. Knock Knock. Who's there Not Sandra.
I didn't know you could yodel!
2.Knock Knock 1.She didn't have any arms!! 2. Who's there NOT SARA!!