Brass Monkeys Underpants Advert
I found this on a DVD-R I recorded from repeats (shown on the channel watch) of the BBC Series Jo Brand's Commerical breakdown about 10 years ago. (Original bbc broadcast would have been 10 years before that I think)
but this ad stood out on reviewing and I checked and couldn't find ''THIS EXACT VERSION'' on youtube so thought I would upload it. Enjoy it