A sigma male is a joke that has been built around the character Patrick Bateman because of his psychopathicnarcissistic and sexist tendencies it can also be classified as a loner loser or somebody that does not respect anybody and has internal hate for everybody around him
There are teenagers like me who work jobs, want to learn how to drive etc. and you have the smallminority of teens boasting about being "sigma males" *sigh*
A high-quality confident and competent male who does not exhibit the Dunning-Kruger, and who does not get alphed by alpha males but can typically outsmart and lead alpha males.