The Scurvy Dog

“Stowaway! Stowaway!”
“Grab the landlubber!” shouted the Captain. “Make him walk the plank!”
The crew grabbed the man and the First Mate slid the plank out, but it fell overboard and floated away.
“Well, shiver me timbers,” said the Captain, “What will we make him walk now?”
“We could make him walk the dog,” said the First Mate.
“Yarr,” said the Captain, releasing the stowaway and handing him a plastic bag. “Be sure to pick up all the dog crap.”
“Why?” asked the stowaway.
“We don’t want this to turn into a poop deck, you see,” said the First Mate.