Your mileage may vary

You know you've been hacking too long when | = Y = | Yow!

Your mileage may vary cav.

[from the standard disclaimer attached to EPA mileage ratings by American car manufacturers] 1. A ritual warning often found in Unix freeware distributions. Translates roughly as "Hey, I tried to write this portably, but who knows what'll happen on your system?" 2. More generally, a qualifier attached to advice. "I find that sending flowers works well, but your mileage may vary."

You know you've been hacking too long when | = Y = | Yow!