Rangers legend Ally McCoist was listening in as radio pal Alan Brazil had a moan about the Ibrox side's penalty against Hibs this week.
And he got his own back when he pulled up the Celtic-daft host for Kyogo's offside goal against Hearts.
The number eight scored the only goal of the game in a decision that incensed visiting boss Robbie Neilson on Thursday night and again returned the gap at the top of the Premiership to four points.
And with McCoist and Brazil on the Friday morning airwaves on talkSPORT, the topic was unavoidable.
An innocuous conversation about delivery drivers - thanks to McCoist's role as an Amazon Prime Video co-commentator this week - quickly turned to the big midweek decisions.
Brazil began: "Do they (the delivery drivers) charge any PENALTIES if it doesn't work and they need to come back out again?"
But McCoist was ready as he replied: "Right, here we go. I knew it. Nine minutes past six, perfect.
"I've got two things to say to you, I knew you'd be at it so I had a look.
"Stonewaller. It's a penalty. I'm telling you it's a penalty."
Brazil insisted: "All I said was, another late goal for Rangers, I didn't say it wasn't a penalty.
But McCoist was unrelenting: "And, by the way, what about your goal last night?
Brazil: "I didn't see it."
McCoist: "No. And neither did the stand side linesman as the wee Japanese fella was sitting, I don't know, a yard offside?
"I like him and he was lively but he was offside.
"I accept it, you and the stand side linesman, neither of you saw it."
