The first letter of the Greek alphabet, used to denote the first or foremost item of a set, for example by biologists to refer to the highest ranking in a social group of animals. More recently, out of the MRA cesspool leaked a travesty of this concept, applying it to (exclusively male)
humans. Used by overgrown boys to refer to themselves, as apposed to everybody else being a beta, a cuck, or a
peasant.
Fancy themselves kings of the world because they got laid once, or at least claim to have been. Completely fall apart the second someone questions their
weak charade of masculinity. Sure sign of an infantile dipshit and/or massive douche.