60+ HAVE YOU SEEN THIS COMMERICAL?

I have an older cousin, (age 61 now) who once told me he wished his mom used disposable diapers when he was a toddler. At about age 3, which would put the year 1966 or 1967, possibly 1968, he remembers seeing a commercial on TV (he only had a 19 inch B&W set then) where some boys, about 5 or more of them, age 6 - 9, were standing in a line outside, possibly waiting to use an outdoor bathroom. A male announcer says, "These boys are going to "Pee" their pants; and they're ready!" Each boy in line, facing the camera together, is shown "peeing" their pants: with a wet spot appearing at their crotch and running down their pant legs. The commercial cuts to show the advertised product, as the announcer says, "With (product name) if this happens, it doesn't show!"
My cousin says he only saw this commercial once, or thinks he did. He is unsure what the product is called. Or if this was an actual commercial, or just his wishful imagination as he was potty training.
Have you seen this commercial? If so, What was the product? When did this commercial air?
Most likely, this commercial would not air today since many new standards and rules are in place.
Perhaps, a strange commercial, but HAVE YOU SEEN IT?