Red Bull chief Christian Horner could not resist taking a dig at Mercedes chief Toto Wolff and junior driver Esteban Ocon, as the team principals met ahead of Sunday's Abu Dhabi Grand Prix.
Ocon - who currently drives for Force India - is set to become Mercedes' new test and reserve driver for the 2019 season.
Despite a more than promising start to his career in F1, however, the Frenchman drew the wrath of many fans during the Brazil GP, after making contact with race-leading Max Verstappen, in an attempt to un-lap himself.
The contact resulted in Verstappen losing what looked to be an almost certain race victory in Brazil, and led to the Red Bull driver angrily confronting his fellow driver after the race, repeatedly pushing Ocon in front of the on-watching media.
Ocon and Verstappen's rivalry goes back to their Formula 3 days, with this latest incident serving only to reignite the competition between the two once again.
The incident also sparked debate amongst both team's principals, with both Red Bull chief Christian Horner and Mercedes boss Toto Wolff coming to the defence of their respective drivers.
When the future of Ocon was brought up at Friday's team chief meeting, however, Horner took things a little further, firing a sly dig at both his rival team as well as the driver in question.
After Wolff confirmed Mercedes' plans to use Ocon as their simulation driver, as well as their main reserve, Horner also asked if the driver could receive special training in one particular area.
Referring to last weeks incident, Horner chipped in: "If you could also show him what the flags mean, that would help!"
Whilst Horner and the assembled media saw the funny side, the same could not be said for Wolff, who merely continued to glare at the back of the media room.
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