When Jenny was only 3 she had a medical condition that required the use of suppositories. Jerry called them torpedoes.

One day the two of them were taken on a tour of a submarine. When they got to the torpedo room, Jenny's eyes got as big as saucers. There, piled on special
stands, were the biggest, brightest torpedoes she had ever seen.

Seeing the look on her face, Jerry leaned over and whispered to Jenny, "These must be the ones they use on sick whales".