What reason do you have for wanting to discredit Conspiracy theories? Why do you mock? If Conspiracy theories really were as you believe (ridiculous), then you would have no reason to mock, you could simply tell us the truth and provide SOLID evidence to prove how silly the theories are.
But instead, you mock while distracting the other person from requesting evidence.
Challenge:
Acknowledge and justify Operation Northwoods. Tell us how silly the theory about the fake moon landing is even though the Parkes Radio (different reports, but all agree the transmission was "tricky") Telescope in Australia was supposed to recieve the video signals and had high winds cause a malfunction.
There are dozens of other conspiracies that have been documented, but you don't need this explained to you, it is common sense that people are usually in competition with each other and that the gov't. also is going to scheme against the people. Since you fear the possibility that somebody else might know more than you on a particular subject, you seek to discredit the discussion and blatantly AND shamelessly add nothing to the discussion except mockery.