The characters belong to Eoin Colfer. The original poem, probably written in the Elizabethan period, is by an anonymous poet.

Chemistry

The effect of soap on detergent is well known. Adding soap to detergent bubbles causes rapid foam collapse, or to put it more simply – drop the soap into your bubble bath and the bubbles disappear. Artemis knew the chemistry; what he hadn't expected was the psychological effect, not to mention the physiological effect, when Holly did just that while taking his video call. He dreaded what her reaction would be but the words were out before he could stop them.

"No beauty she doth miss
With all her bubbles on:
But Beauty's elf she is
With all her bubbles gone
."

Author's note: Another dreadful pun I couldn't resist – but it's so fluffy!