On the rare occurance that one meets a female with a glass eye, one must proceed to initate this process. When a male skullfucks a female while teabagging her at the same time. Thought to be a myth/legend, but a few reported incidents give us all hope. Level of awesomeness: Impossible to measure.
No example is needed it should be self explanitory. Every male must skullbag a female at one point in their life.