Pirate Shower

Listen here, kid. Pirates are known for sailing the seas and not showering (gross!). Instead of showering before walking the plank, they "wash up" on shore because the ocean washes their dirty bodies. It's a pun because "wash up" means to clean oneself, but also refers to being carried by the sea onto the shore. You probably think that "walking the plank" means going for a nice stroll, but pirates force people to walk off a board into the ocean!