verb/a.vwaʁ dy sɑ̃ syʁ le mɛ̃/
to have blood on one's hands
“Tu es peut-être sorti indemne de ton accident de conduite en état d'ivresse, mais tu as le sang de ce pauvre garçon sur les mains.” — You may have walked away from your drunk driving accident unscathed, but you have that poor boy's blood on your hands.