Two little Elves: a children's story.
In the forest there lived two little Elves. Quite ugly they were, and they both walked with a strange, slight, side to side rocking swagger. Their family and friends were careful not to say anything to them so as not to hurt their feelings. So they both grew up learning and doing the things elves do. Good deeds and elvish prankishness were all encouraged in the community and they excelled at it. All were happy and content in the beautiful forest.
Over time these two elves grew a bit more in the ways of the forest and both did a lot of good and were well liked. Gradually however, and in isolation one from the other, they picked up some bad habits. Jumping out in pathways while making a fierce face causing people to drop things was considered great sport by the one. The other little elve liked to growl while hiding, startling but not really scaring the little folks' hunters and gatherers out foraging in the bountiful forest. Eventually these two neglected the good deeds more and more in favour of their favourite sport.
Quite soon though, all the other elves knew about these two and tolerated or ignored them. They did little harm initially and on a good day were fairly well behaved around the village. One elder elve of great humour, and some say a great sage, was a little perturbed when in time he became aware of their nefarious doings. He decided to teach them a lesson. When he caught them up to there usual tricks he would return the favour by making fierce faces and growling back at them. They were quite confused by this and redoubled their efforts, not realising that the elder was not born yesterday; he was an old soul. In sheer frustration both of them uttered oaths and cursed most foully. Their little faces contorted, they drooled slime and their tiny clawed paws waved ineffectually in the air. Finally the forest folk could see them for what they were...
Dirty little trolls.
Part two to follow: in which puckish bromance blossoms.