You're so right they're like little girls giggling maniacally while talking about their crushes.
I think denialists more resemble Beavis and Butthead. Doing the "hehehehheheheheh, that's gay!" thing constantly, and often mentally masturbating together like a couple of little old spider monkeys (to quote Mr. Anderson).
However, they do have their periods of outright screaming hysterics. Those occur when you show them any fact that contradicts one of their political cult's sacred mantras.
Most on the right (formerly the norm) tend to be A-political. We only become political when forced to defend our beliefs.