I feel everyone should be nice to dwarves. I feel everyone should be nice to everyone. But I agree with Karl on this one. Warwick has been a little sidekick to him for the whole show pulling him to do what he wants. This almost feels like bullying but oh god if there ever was a time to get a laugh out of bullying, its when Karl Cookie Pilkington forces a dwarf to be strapped to balloons.
Besides. Look how happy Karl is. Karl displays true equality.