Today's St Stephen's Day clash between Munster and Leinster will be a particularly special one for Peter O'Mahony, as he makes his 100th appearance for Munster.
Over the last seven years, O'Mahony has grown into an outstanding leader for Munster, Ireland and to top it all off, the Lions. Aside from his performances, the Munster captain leads the line in fist-pumps. In fact it's doing him a disservice to merely describe them as 'fist pumps'. They're better than that, they're 'Peter O'Mahonys.'
Here are just a few:
O'Mahony celebrates scoring against Leicester earlier this month
The rarely seen 'Seated O'Mahony' celebration
The full O'Mahony
The year is 2014 and Peter O'Mahony's face is partying like it's 1999
They call this one 'The Standing Superman'
He'll be hoping to unleash one of these against Leinster today
The two angled fist pump
The patented O'Mahony drag and celebrate
Somebody spare a thought for Ian Keatley. He only came over to pat him on the back
Munster v Leinster kicks off at 3.15pm and is live on TG4.