If you can't figure out how this Bloodhound Gang song is eminently Sigma, well, the concept is simply going to elude you. Remember, Sigmas are even more contemptuous of Gammas than Alphas or Deltas.
I know my haikus are freaking intense
but even the words I made up to sound French
don't express my feelings for your toilet parts.
I would show up for our pottery class
dressed like a pirate with John Water's mustache
On a unicorn that shits your name in stars.
In case the dripping contempt for Gamma romanticism escapes you, the title of the song should make it clear: "Screwing You on the Beach at Night". And then there is the chorus:
Fucking's cool, but Jimmy's the romantic type.
Loitering on cliffs, thinking about stuff like,
Screwing you on the beach at night.
Being sexual Alphas, Sigmas don't kiss and hug, they fuck and screw. They hate Gamma deception because they see through it and they cannot believe that the Gamma actually expects them to accept his posturings at face value. Being predators, they tend to view the pedestalization and white knighting that is so common to Gammas and Deltas as not only dishonest, but transparently dishonest even when it is not. And as the song suggests, they often have a vulgar streak that most Alphas don't; this may have something to do with their outsider mindset. One way of signifying you do not belong to the group is to offend it.
The video also offers a pretty good indication of the way Sigmas naturally regard Gammas. In the same way that Gammas find it very difficult to believe Alphas and Sigmas are as genuinely confident as they are, Sigmas often find it hard to believe Gammas are not mentally retarded or playing dumb. The quivering lip scene sums it all up in a nutshell. I have to admit, it has taken me a long time and a fair amount of patient explanation to even begin to grasp Gamma thought processes, and if I'm not focused on being sympathetic, my instinctive inclination when talking to a Gamma is to shake him and shout "what the fuck is wrong with you?"