oooh, I get it... "a small package", the lens, like the child is relative to the dog/world. Aaaah, punderful!
I was so fixated on the story that I didn't really take in the ad at first. I guess advertising anything else small it would simply be a pun... But they're a camera and lens manufacturer trying to shift lenses, so... Yeah. Canon execs, you silly sausages!