text: Misused negation "We don't need no education" line implies possible misused double negation (the additional "no" in place of "any"). Yet in Runglish, the "no" would be felt as an "additional" negation, ruining the play on words.
  Compare to Russian: «Нам не нужно никакого образования».
  Thing is, Russian language lacks a short word, similar to English "any". Russian has similes "какого либо" or "какого бы ни было" - phrases, which are closer to "whichever".
  Silent letters
  In Russian language, words don't normally have "regular" letters for voiceless sounds (like the "e" in words like "dice" or "prone"); it may be challenging to learn proper pronunciation since the very idea of "silencing" letters may feel foreign to a person from Russia.
  The exception of designated letters Ь (soft sign) and Ъ (hard sign)) only confirmates the general rule, as these two letters are straight-up "soundless", "signs" and serve special roles.
  Historically defined spelling
  In Russian, it's vanishingly rare to mix letters to represent one complex sound, where 2 "usual" letters form a double-tone, let alone 3-4 letters would be used for 1 sound; a combination of those may look misleading to a Russian. Normally, Russians only use Й letter next to a vowel to form anything similar to a diphthong.