The 79-year-old "Monsieur Pingouin" (Mr Penguin), as he is known to locals in his Brussels neighbourhood, dons his favourite hooded black-and-white penguin costume as he looks back at more than 40 years of obsession.
"My ultimate dream is to be buried in a deep ocean close to where penguins live," David said.
David's life changed in May 1968 when his hip was injured in a car accident. His resulting limp was characterised by his colleagues as a waddle, and they dubbed him Mr Penguin.
As a consequence he embraced an interest in the flightless sea bird and began collecting everything he could find that had a link with the animal.
As his obsession grew, he eventually set up a museum in his home displayed some 3500 items of penguin memorabilia.
His wife showed him and his collection the door when he told her he wanted to officially change his name to Mr Penguin.
David later donated his penguin collection - which ranged from penguin lavatory paper to cups and toys - to a local soccer team to raise money for the club.
Proud of the international media interest he has attracted to the penguin cause, David has appeared on dozens of TV shows over the years and was invited as a special guest to the 1992 Amsterdam premiere of Batman Returns - which featured Danny DeVito as the hero's nemesis "The Penguin".
In an era of movies such as Happy Feet, March of the Penguins and Mr Popper's Penguins, television spots are rarer for him nowadays.
He is still well-known in the streets of Schaerbeek, the Brussels district where he lives and where the burghers greet him: "How are you today Monsieur Pingouin?"
Taking a glass of red wine between his penguin-suit wings, David said he still needed to use his thumbs after all these years to make sure he does not spill it.
