In English, 'butterfly' sounds warm, and kinda tasty (see 'butternut' and 'butter popcorn'). In French, 'le papillon' sounds, well, typically French and limp-wristed. In German, DER SCHMETTERLING sounds like
something that could do you serious damage. It sounds like it would casually flap towards your face, then
slap you in it with its 10"
schlong. Not to be fucked with.
"Hey
man, did you see that schmetterling just
now?"
"Yeah, my face still hurts."
"Don't make me
call the schmetterlings to sort you out."