Trick or Treat.

[MrJoey]

Trick apparently... I've gotten tricked by the innkeepers 3 times in a row... FML

Edit: Up to 4 in a row now. This event officially blows.

[Lempi]

There is a theory that if you goto an outdoor Innkeeper and get Trick of Treat while flying (So outland or northrend obv), you will only get a treat as you cannot be morphed while mounted.

Not sure if it works, my friend said it did last year.

[MrJoey]

I'll have to try while shapeshifted, cause druid forms also have none-morph rules.

5th one, I was in boomkin form, but who knows if that truly affected it. Will try all of them in that form from now on though.

Edit: 6th one, I was in boomkin, got tricked, just didn't get morphed.