A dude who's way too cool to make up and urbandictionary definition of his own name...someone with a boring name like James or Sally has to make up one for him. Additional characteristics necessary for being called Reggie include being impossibly awesome, and being impossibly talented at everything (except singing). Oh, and everybody loves Reggies.
Girl 1: I think I'm in love! Look at that dude over there!
Girl 2: I think I'm in love too! He's probably called Reggie.
Girl 1: Yeah, most likely. They say guys called Reggie are the coolest.
Girl 2: That's soo true!