Australia's bowling coach David Saker has taken a dig at Mohammad Amir, a few hours after the Pakistan paceman copped an on-field spray from Mitchell Starc.
Amir scored 48 on day four of the day-night Test in Brisbane, producing the highest score of his Test career to help Pakistan finish 8-382 at stumps.
Amir had an absorbing battle with fellow left-armer Starc, who peppered the tailender with bouncers and went close to dismissing him a couple of times.
Things turned heated in the 92nd over, when Starc struck Amir's pad with a 152.3 km/h full toss.
The pair swapped verbals, with Starc staring down his opponent and barking "what was that mate!? ... did you have to something to say?!".
The standing umpire spoke with Starc, who appeared to respond "he just swore, I didn't swear".
Saker made light of the flare-up, poking fun at Amir's antics on day one.
"I don't know (what they were talking about). It might have had something to do with his knee injury on the first day," Saker said.
"I'm not sure. The recovery powers were quite unique so he might have been asking how he recovered so quickly."
Amir appeared in agony on Thursday night, when he was taken from the field on a motorised stretcher after digging his knee into the turf.
Commentators predicted it could be the end of Amir's series given how painful the fielding mishap looked, but the left-armer returned from the rooms and took the second new ball soon after.
"We didn't really come to that," Azhar Ali said, when asked if he'd spoken with Amir about his confrontation with Starc.
"We'll probably have words after that.
"But it was a very good hard-fought game today from both teams. It was good to watch."
Amir was mocked by New Zealand fans - and, at one stage, even a ground announcer - on his first international tour after serving a five-year ban from cricket
Gabba crowds during the ongoing pink-ball contest haven't given Amir, convicted of spot-fixing in 2011, any boor or special treatment.