tfm i have the stupidest nicknames:

Rawraw
Raw
rara
rwar

though smart people call me Rawr.

IRL:

Kili

Dark
Darka [hate this one]

Glub

IRL:

Glauberyon

a lot of people just call me by my full username because it's so short lol
(but they always typo, SIGH)
but some of my nicknames include these:
ved
dae
veda
veddy
vadea(somebody decided that was my pet name?!?!? è__é)

and many more

Well people usually just call me Cinder

but some friends call me Cid or Cinderblock

and other random stuff they think of

Magic, Magicblue, Blue, Blueeye...
IRL: Bapt'

Black,
Blacky,
Star,
Kid, (Yes, from Soul Eater)
Avacado,
Starfruit

lingling

Ly <-- short right? :O

animal or lady

TFM: Leafy/Leaf

IRL: rinny, ez, apple-juice

Tfm: Yamur
Irl: Yumurta (egg)
But my english friends says "Yogurt"

TFM: Pepper IRL: Summy Summy Sum (its in song... -___-)

TFM:trop
IRL:Sar

TFM:Cika,Jess
IRL:Shushie(?)

TFM:Jam or Jamity most often Jam

IRL:i dont really have 1

Tfm: Mice (sometimes Micefam)
IRL: Don't have one except my friend use to call me "K" when we were younger :3

Bug or buggy or lina or linabug or linabuggy

pretty much everyone calls me Skye unless they don't know me, then it's Nez or Nezu.