Is profanity heredity?

One of her first spoken words, for example, would get most kids kicked out of pre-school, or at least sent home for the day. My wife had warned me to clean up my mouth around our baby-turning-toddler. "She absorbs everything you're saying," she said. "You need to stop cussing in the car."

"Yeah, yeah, yeah ... sure, Carol, yeah, thanks a lot for your concern. I'll be sure to note this."

And then one day, s...