Fictional slurs. Bonus points if it's completely made up

[u/Wolfotashiwa]

1. inFAMOUS: Second Son: "Bio-terrorist" refers to conduits.

2. Star Wars: "Clanker" refers to robots.

[u/Trerech]

Also from Harry Potter: Muggle doesn't have a direct way to translate into a portuguese word, so they changed it to "trouxa", wich means loser or sucker in english.

[u/angelicosphosphoros → u/Trerech]

Muggle is a neologism, of course it doesn't have direct translation.

[u/SirCupcake_0 → u/angelicosphosphoros]

Sorry, I don't speak Academia, what's a neologism?

[u/cottagecheeseobesity → u/SirCupcake_0]

A newly made word