An admiral is standing by a candy machine at the Naval Academy in Annapolis when he stops a plebe walking by.
- "Sailor, do you have change for a dollar?"
- "Sure, buddy," - says the plebe, rooting around his pocket.
- "That"s no way to address an officer! Now let"s try it again. Do you have change for a dollar?"
The plebe snaps to attention and barks,
- "No, sir!"
Snails produce a colorless, sticky discharge that forms a protective carpet under them as they travel along. The discharge is so effective that they can crawl along the edge of a razor without cutting themselves.