Marcus Gundersen is a person who enjoys incest with his little sister, he also drinks more apple juice than water thats why his skin is so dumb and ugly. Marcus Gundersen is also per definiton the human form of bearnaise sauce and has the same attitude.
Furthermore a Marcus Gundersen likes to dip his penis in peanutbutter so that his tiny stupid twerking dog likes to lick it off for Marcus Gundersen's enjoyment.
The gender identity where you identify as the gender who statistically performs best at the task you are currently doing.
"Yo Paul, why are you wearing a dress?"
"I'm genderconvenient and have an English exam today, and girls do better than boys in them, so I'm identifying as a girl."