Because if they didn't they'd fall over.
One's a legacy, the other a sea of legs.
A dead cat.
Eric Clapton would never let a bag of cocaine fall out of a window...
Didn't have any hands.. (the real punch line) Knock knock.. Who's there Not Timmy..
Understandabull
Because the Captain was stood on the deck!
So you can tell them from flamingos!