Mark Williams revealed how a blunt appraisal of his performance from his 13-year-old son Kian spurred him on to beat Stuart Bingham and book his place back in the World Championship quarter-finals.
The three-time former winner turned an 8-8 overnight tie into an impressive 13-11 win over his fellow former champion, taking him into the last eight at the Crucible for the ninth time.
Williams said: "I walked in and the first thing he said was, 'why are you so crap?' I'm going to take him on the golf course and give him an absolute b******ing because of all the stick he's been giving me these last few days."
The 45-year-old Williams emphasised his newly-relaxed demeanour during the marathon tussle, laughing at himself for missing a simple black in frame 11 and tweeting about the "best of 5" showdown as the pair sat locked at 10-10 at the mid-session interval.
A break of 74 moved Williams two frames from victory before Bingham fought back with a superb 48 to make certain of another tight finish following Kurt Maflin's famous victory over John Higgins the previous night.
But just as Maflin had ultimately pulled away to victory, Williams seized his second chance in the 23rd frame then avoided a decider with a break of 75, keeping alive his chances of emulating fellow Welshman Ray Reardon and winning the world title at the age of 45.
"I always really enjoy it and even though I was throwing frames away in the first session I was still enjoying it - it's only a snooker match," added Williams.
"If I lost it today it wouldn't have been through lack of trying."