Nothing lawsuit worthy, just a small bump or cut? Also, keep it to the rides, I don't wanna hear about the 20847043 times we've all been knicked by strollers.
To this day I cannot figure it out but a few months ago I got off of Tower of Terror and my finger had bled all over my hand (from one very tiny cut!), so much so that I received many weird/scared stares from tourists on the way to the front of the park (which directed me to the hidden nurses station in the back). Other than that I've never gotten hurt.