Mega-ginger
A ginger who is obnoxiously ginger-ish, even moreso than the usual. an extremely vibrant red/orange ginger; or one with long, nasty hair or a gingerfro. Firecrotch on their head, for example. One with an unabelievably excessive amount of freckles, if it were to have a kid with another ginger, it would be one giant freckle
Holy shit! Look at that nappy-haired mega-ginger! It's so gingery I'm gonna puke!