Nostril Assault Share definition Flag When someone does something that smells bad such fart or have a massive shit so that it stinks really bad and "assaults" said persons nostrils. Person 1: *farts* Person 2: Jesus Christ, why would you do that, that's Nostril assault! Nostril Assault by LordJenal March 21, 2024 Get the Nostril Assault mug.