That look. It's enough to make even the most emotionally stunted individual wither and die.
One World Cup press officer was incredibly thankful for Paul O'Connell's comic timing when his phone went off in the middle of Ireland's press conference yesterday.
If it wasn't for O'Connell's 'that's a fine', we genuinely fear that the press officer in question would have turned to stone with the power of Joe Schmidt's unimpressed gaze.
The Ireland boss eventually managed a smile but even at that it's still the kind of smile that you really don't want to see.