It's second nature to me now.

In an e-mail thread to Betty about cartoons, I said the following.

Thankfully, they don't tire with age. I still get mileage out of the story about how I hooked my parents on _Pinky & the Brain_. (No pun intended with "tire" and "mileage", I swear!)

I've blogged before that I pun even in my sleep. I'm glad this isn't a potentially lethal issue.