"But then the idiots wouldn't understand it."; which gives even more scope for laughing at their incomprehension.
(Actually, I was trying to explain a graphical design without the mathematical tools. Try illustrating the shirt that reads "I ate some pie" - or am I going to be humiliated by someone showing me the math toolkit in this editor?.)
I have learnt the lesson the hard way. Whenever I have to send 'such' mails, I type them and keep in the Drafts, read them after about 15 to 20 minutes. Most of the times, I change my words, check the e-mail address of the recipient VERY carefully, and THEN I press the send button.