Another one for England; wait, there's more:
The grand release of George Hrab's Trebuchet,
The waking of the Cloverleaf beast, or
His crummy RSS feed reader and
Some buggy LamdaMOO verbs, or a fifth
And stranger cause: those vuvuzelas. Land
Is sensitive to their vibrations, too,
I have no doubt. Perhaps, though, it was all
Of these, mayhap some odder causes (true:
These all are pretty weird already; call
Me crazy if you wish) did cause to shake
The ground beneath the shield: CanadaQuake.