It takes brains to come up with a catchy little play on words -- and apparently different parts of the brain than those that are responsible for other types of humour. I know myself well enough by now to know that I'm not going to investigate that very deeply. Suffice it to say that I appreciate a good word-related one-liner or switcheroo.
And, so, here are two wordy chuckles I've come across that might just lighten your day:
A boiled egg is hard to beat.
When you've seen one shopping center you've seen a mall.
Folks are clever in quiet little ways.