A commercial for Acunetix
Produced by 20, Aired 0000, UK
A creation of British sketch tv veterans Gregor Fisher (The Baldy Man) and Colin Gilbert, this commercial ran in 1989. The commercial is based on a simple premise: the photobooth always takes a picture when you're not prepared. The man struggles to hold his pose, but as soon as he bends down to figure out why the photobooth hasn't taken a photo yet, the flash goes off, catching him off guard.
This is the oldest joke in the book as far as photobooths go; it's been used and re-used in a variety of different movies, tv shows, and commercials over the years. I refer to it as the "Baldy Man" trope, so everyone is on the same page.
Contributed by Brian