"Be creative with your own insults"

[Falka]

You are free to call other clans Byzanidiots(as you already did), Nerds, Failen, etc. Even Hospigayler or Gheys is fine from my point of view, although borderline. Grow a thicker hide and be creative with your own insults. But don't go full-panos.

Any other suggestions? 

[Sable Keech]

The Failen BriGAYed, Thats my fave.

[Kafein]

The Goy Order ?

Fellatio Brigade ?

boNerdmen of Panama ?

H(er) R(ectal) E(ffusion) ?

[Conquisitore]

DKG: Deutsche Kinder Gottes (German kids of God)

[Tibe]

Hernia Reviving Elderly?

Snortmen?

Damaged Krotch Gamers?

The Gay Order(that was easy)?

Losezhina?

And my favorite insult: "I will throw farts in your general direction"

[Moncho]

Some old(ish) ones:
H(oly) R(oman) F(ail). They fail so hard that even bits of their name drop out! jk, nice guys in general.
Templols / Derplords / Herplords, etc
Krapikulu/TKsquad

so many...

[pingpong]

Gays who cannot block in melee nor never hit you from horseback but instead bump you to death Khans

[Rumblood]

Free Cunteries of CockRadia!

[Kirbyy]

Maltards :I

[Gravoth_iii]

Byzanticunts has a nice ring to it, Templols also a good one not so much of a insult though (atleast from my point of view) and fallen/failen brigayde..

[Kafein]

Kapisnapthatwasntanallykulu

[Havoco]

Derpzhina, zeroes party, remcunts, Federal Communications Comission, Norse Whores, (regarding land owned by GK) Gay Khandom, tamponics.

[Dooz]

crpg-tards

[Tigero]

Holy Retard Empire
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KRAPIKULU SOOSSOOS LOL!!!

[Ujin]

Great  (C)Kunts