Look around! No one else got the memo! For God's sake, you just sang your heart out and Judi Dench's response is to start RUBBING HER HEAD ON YOU.
Not just ordinary salt, mind you – no, not our old friend sodium chloride – but, rather, the much stranger, 'I didn't even know this wasn't poisonous, let alone food', ammonium chloride. Yeah, salmiakki is weird.