Max Verstappen was left unimpressed by the actions of one of his Formula 1 rivals at the Monaco Grand Prix.
On the narrow, windy streets of Monte Carlo, drivers sitting on the racing line is even more of a problem than at other circuits on the F1 calendar, with not much room to manoeuvre.
Lance Stroll found that out the hard way during Friday's first practice, when he drifted into the path of Charles Leclerc having not seen the Ferrari car behind him, and ended his session as Leclerc went into the back of him and badly damaged Stroll's gearbox and rear suspension.
Elsewhere, however, four-time champion Verstappen was involved in a near miss with Sauber's Gabriel Bortoleto in FP2, narrowly missing out on a big crash as the Brazilian began to get to grips with a circuit at which he has never driven an F1 car around.
Verstappen was furious, taking to team radio to tell engineer Gianpiero Lambiase that, despite it only being practice, the error in judgment from Bortoleto to impede the Dutchman when he was on a hot lap was 'unacceptable'.
"**** mate, unbelievable these guys," Verstappen proclaimed during FP2. "So dangerous! I know it’s only practice, but for me that is unacceptable.
With it being just a practice session, Bortoleto was not given any punishment by the race stewards, but if the incident had happened during qualifying, it would likely have been a different story.
Verstappen had hoped to claim a second consecutive race victory this weekend, to stay in touch with McLaren stars Oscar Piastri and Lando Norris in the drivers' championship standings.
The Dutchman, like all drivers, would have been hoping to get as many laps in as possible during the three practice sessions, as drivers try to get used to a circuit that is completely different to any other on the calendar.
Any incident that may hamper practice time can be absolutely crucial for drivers, which may have been why Verstappen was so furious with Bortoleto's mistake.