World Marmite day?

For the first time in ages, today I had cheese and Marmite sandwiches.

So imagine my surprise when I heard over the radio that it was World Marmite Day today…or not:

Female presenter: …and today is World Marmite Day.
<pause>
Male presenter: [guffaw] Er, I think you misread that…
Female presenter: What? It’s World Mar…Marm…Maritime Day today.
Male presenter: [collapses in fits of laughter]