Eureka?

Our physics professor was struggling to draw the class into a discussion of Archimedes' principle of water displacement.

He told us that Archimedes noticed that when he got into a pool at public bathhouse, the water rose, spilling over the edge. Excited at his discovery, he ran down the street yelling, "Eureka, Eureka!" The instructor asked if anyone knew what that meant.

One classmate took a wild guess: "I am naked, I am naked!"