What lies at the bottom of the ocean and twitches?

Behind the Groan

Wrecked in Two Ways

A nervous wreck is someone overwhelmed by anxiety. At the bottom of the ocean, a wreck can also be the remains of a sunken ship, while the twitching supplies the nervous behavior. Ask the setup like an underwater riddle and give listeners a moment to imagine sea creatures. Deliver “nervous wreck” plainly so the emotional phrase and submerged object click together.