I've seen on several billboards around Richmond, Va.
There's also the "my sister never told me..." variant. Both have a picture of two happy looking people on them, an older looking gal or guy with their younger sibling.
These billboards are an example of ad-campaigns that are not well thought out. The wording implies that the kid's brother showed him how to smoke, not the other way around. And, gosh, what a poignant message....the guy showed him how not to smoke, didn't tell him. So don't tell your kids not to smoke. Show them not to smoke. Isn't this a direct contradiction of those "The More You Know" ads on NBC, in which well-known celebrities pitch equally confusing statements about good parenting? I seem to remember hearing those people say "talk to your kids."