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That, when you tread on small plastic childrens toys, it somehow hurts more (and often for longer) than when you cut yourself.
Jeremy Kyle. Him, his show, it's guest and audience, his attitude, the fact that he isn't dead, the fact that I'm not legally allowed to kill him using the method of my choice, the fact that there is no God (surely He'd put an end to him if He existed?), the fact that he's yet to appear in the stats for annual road fatalities... You get the idea.
That, after watching The Cove, what really annoyed me was the level of corruption and greed which, IMO, is much worse than the death of thousands of dolphins.