A crinkle in Kate's crinolene? Willie got the wobblies?
No - much worse.
They're short on the kopi luwak for the after-dinner coffee & choccies.
Those of us with a passing interest in coprology will know that kopi luwak gets its rich mellow flavours from its brave journey through the stomach acids and digestive tract of the Asian palm civet.
And that's the guts of the problem. Civets don't have opposable thumbs - so they can't build bulldozer busters - so they can't prevent rainforest destruction - so there's less of them - so there's a shortage of civet poop. You get the picture. Less poop = less kopi luwak.
At £40 a bean (and in the current economic climate), it's definitely worth trying to fake it.
The Palace have certainly tried. All night long, the corgis were turning somersaults and yapping at imaginary caffeine-induced cats, and the queen now has big bags under her eyes (but that's because she's actually quite old).
It was also Wikileaks that let the civet cat out of the bag about the secret memo received by all six million Civil Servants earlier this week. For one night only they were all to become Civet Servants. I don't need to spell out what they were asked to do: you can read this for yourself on the Wikileaks website.
But what has this got to do with the Mustard Seed - you may ask?
Ask me again after I've had my morning cup of delicious traidcraft medium roast while watching the Royal Wedding....