Nico Hulkenberg has continued his spat with Kevin Magnussen following the Hungarian Grand Prix by describing the Haas driver as a "wannabe [Max] Verstappen".
The pair had an unsavoury row following Sunday's race after Magnussen had been handed a five-second penalty for easing Hulkenberg off the track.
Hulkenberg subsequently retired from the race and, as Magnussen conducted a post-race interview, the German interrupted and offered sarcastic congratulations to the Dane for being "the most unsporting driver on the grid".
Magnussen promptly told his rival to "suck my b***s" and his response has led to a retort from Hulkenberg in his regular column for Sport1.
"At the moment we have different challenges in Formula One than the b***s of a wannabe Verstappen," he said.
"I'm not the kind of guy to curry favour with the public after the race, and I don't need to insult someone.
"If I have a problem with somebody I go ahead and say what's on my mind.
"But the fans are happy about seeing a sport in which competition is being lived and somebody is speaking his mind.
"This is the fun thing about F1, especially with hot-headed sensitive people.
"With Kevin it's like having a little brother. You know he is not able to defend himself in any other way. Therefore, it's easy to take his remarks with a smile on your face."