Following John Dixon's success after the complaint about his tweet "I didn't know the Scientologists had a church on Tottenham Court Road. Just hurried past in case the stupid rubs off." was struck off, I though I'd highlight a couple more things.
Luke Hymas drew my attention to endlesspsych's gif:
Also, we couldn't not have the Tom Cruise's leaked #stupidscientology video:
With these two things in mind, you can quite clearly see why John L Dixon tweeted what he did.