What did the janitor say when he won the lottery?

The humor in this one shines through a classic bit of wordplay, taking a phrase with two very different meanings and smashing them together for a laugh. When a janitor declares they're "cleaning up," we immediately think of their day-to-day duties, tidying messes and keeping things spick and span. But when that declaration comes after winning the lottery, the phrase takes on a whole new, much wealthier, meaning. It's a clever twist on expectations, making us chuckle at the sudden shift from literal to figurative.

This joke taps into the universal dream of a sudden windfall, especially for someone in a job that often goes unnoticed. Lotteries, with their promise of instant riches, have been a source of fascination and hope for centuries, offering a quick escape from the daily grind. The idea of someone who literally cleans for a living suddenly "cleaning up" financially is a delightful bit of irony that plays on our understanding of both the job and the financial idiom. It's the ultimate rags-to-riches story, condensed into a single pun.