What Does 'Porno' Mean?

Kevin Smith's "Zack and Miri Make a Porno" was almost rated NC-17, cuz' they show penis and vagina in the context of sexy times. Luckily, Smith was able to talk his way into an R rating, but now the movie's ads are facing similar scrutiny from the poor folks who have been exposed to the word 'porno' and their kiddies.
No joke. One guy said he and his son were watching a baseball game, and while he was explaining the sacrifice bunt scenario to his little one, the commercial came on. Kid's response, "Dad, what does 'porno' mean?"
commentary HERE
The original promotional poster has already been banned...