Gwingger

Gwingger is a slur used to describe a Wigger who has red hair. A Gwingger mixes all the negative stereotypes of gingers and wiggers. They are usually former scrawny bullied gingers who now over compensate.

Simon: "Casper is such a Gwingger, his pants sag"
Michael: "Oh Casper the red head from kid from gym and English class?"

ACK!

A slur used to mock trans people. The word ACK, originating from 4chan, it imitates to the sound of a popular far right meme of a cartoon where a transgender person hangs themselves thus makes fun of the high suicide rates within the trans community.

ACK! is thus not a slur to name trans people, rather a word for suicide of a trans person, used in a manner to mock the trans community.

*Comment thread of a trans influencer*
Far right commenter: "hope you ACK! later today"
Far right commenter 2: "hope the troon ACK!s"

niggel

nickname for the name "Mikkel". Niggel is most popular in northern denmark, where a mikkel often gets called niggel. Niggel is a contraction of the name (Mikkel) and the N word, though the name is only used in a fun poking way. it is not to be confused with "Nigel"

you: "hey niggel, whats up"
mikkel: "please stop calling me niggel"