A/N: My sincerest apologizes for this update taking over a month. My explanation is one word: School. It's spring break now, so I will be updating stuff more. On to the insults...
Dementor
Contributed by: @WifeOfEnjolras
Fandom: Harry Potter
Meaning: Dementors are creatures who suck happiness out of everywhere they go, and the souls out of people. So, I would say that calling someone a dementor would be akin to telling them that they suck the happiness and soul out of everyone they meet and everywhere they go.
Traitor
Contributed by: @WifeOfEnjolras
Fandom: N/A
Meaning: "a person who betrays a friend, country, principle, etc.."- Google. So pretty much (at least to me) the WORST kind of people.
Normal
Contributed by: @Bookfan_3
Fandom: N/A
Meaning: "conforming to a standard; usual, typical, or expected". *shudders* Use this one sparingly, I beg you.
Klunk
Contributed by: @Bookfan_3
Fandom: Maze Runner
Meaning: Poo (so the s-word or crap).
Mortal
Contributed by: @Bookfan_3
Fandom: Percy Jackson
Meaning: Normal human
Mundane
Contributed by: @Bookfan_3
Fandom: Mortal Instruments
Meaning: Normal person
Umbridge
Contributed by: @Bookfan_3
Fandom: Harry Potter
Meaning: Dolores Umbridge was a horrible character from Harry Potter, so I would use this as a direct insult to someone.
Pansycake
Contributed by: @4_fandom_geek
Fandom: Divergent
Meaning: I had some trouble finding a definition to this one (I looked it up the first result was the definition of pancake) but, it's synonymous with coward or idiot. The example given by the Urban Dictionary is: "Truth or Dare?" "DARE, I AM NOT A PANSYCAKE", which personally seems like something Nebula (MCU) would say.
Monumental Blockhead
Fandom: Eragon
Meaning: Really big idiot.
This is just English, but I got it from Eldest, so I'll credit Christopher Paolini. it's a part of a character's rant and I recommend the entire series to all.
Clitch
Fandom: Peace Cycle (AKA one of mine)
Meaning: Generic swear that can be anything from the f-word to crap or dam.
Sorry I wanted to include this since my twelve-year-old self would be kicking me if I didn't. She made it up so.. yeah.
Go Engage in Derogatory Procreation with Yourself
Or, in simpler terms, go eff yourself. *giggles in I-love-using-complicated-words-in-everyday-language*