I think this would make for a fun and effective print ad and
TV spot for Viagra: simply show the guys from Aerosmith (who are undeniably
getting old by now) in their hotel room with a bunch of beautiful women pawing
at them, and then just add the Viagra logo to the picture. (<Add the logo to
the bottom corner of the page for the print ad, and perhaps superimpose the
logo over the middle of the screen as the picture is blurred at the end of the
TV spot.)
It would be the simplest way to convey the idea of what
Viagra is for, and it would require no explanations whatsoever.