Before you get your knickers in a twist, you should read all the updates in the DM9DDB Brazil 911 / Tsunami ad post - after that you may proceed. Here's the easter egg, a commercial that went with the One Show merit awarded WWF poster. The line makes a little more sense here in the TV ad, so I think the disconnect that I got from the poster was their original line being lost in translation.
See also 9/11 Ad for WWF Causes Tsunami of a Crisis for DDB Brasil at Adage.
In a separate mishap in a bad week for DDB Brasil, "Tsunami" accidentally ended up in a folder for work to be sent to journalists by the agency's public-relations department and was mistakenly sent to Ad Age sibling Creativity this week as though it were a new print ad. It was described in the e-mail as "a great campaign."
A DDB Brasil spokesperson in Sao Paulo said a video version of the ad being circulated on the internet was not done or authorized by the agency or the client. She said DDB execs first saw the video, which features slightly different copy, on the internet and don't know who created it.