But how did Troll Thumping Day get started and who did it?
This is how Trolls try to blend in about this time of year. Note that he's actually been around for a while. Also, note the avatar. Trolls are under the misconception that 'hair' will confuse a Thumper, but there is no mistaking the disproportionate size of the head and lack of any neck at all.
Next he'll be saying how he can't 'wait to thump him some troll butt', which is usually (as we all know) the dead-give away.
I must say, I never tire of their amusing little antics.