Headcanon: Bucky taught himself to do the cool knife flippy thing when he was a Howling Commando, bc War is long periods of boredom punctuated by brief moments of terror.
General approximation of how my Russian ear heard this scene the first time (and it was perfect):
DESIRE!1!!1!!!
zh-rusty!
twzwelve!
intelligence seRRRRvice
f’yornace
nyain
kind-quality (also sounds like “benign” with odd ukrainian accent)
RTVUVRN TO MADALAND
wahn
thunderstorm wagon
EITHER “soldier” with honey-cute uwu pronunciation (he softens the “L” like a german would, but in russian softened consonants are used for baby-talk) OR, if broken in two words, “want some salt?”
I genuinely feel this is something M’Baku would be aware of and concerned about. He’s just that dude. Pranks, but not the triggering kind, keep it cool.