It's a pun derived from White Walker (the game of thrones); Used towards white people, not necessarily derogatory
He's such a white wanker
A white wanker
Other terms: willy wanka, wonky wonka, wonky willy, et
That wanker is such a willy wonka
A white person; their skin is the same color as cum
Other terms : cokeface, methface
That cumface cops pulled him over
A white person, pale as a zombie
Other terms: corpse
I need some tan because i look like zombie corpse