Johar, 41, said their exchange of words on Twitter are just for fun.
"It is fun. We are having fun actually. It is war of words for everyone's entertainment. According to me, right now, I really want to find a new filmmaker to pick on because he is so last season in my life," Johar, who was in the city to promote 'The Lunchbox', said when asked about his Twitter exchange with RGV on Teachers Day.
"If someone takes off from Karan Johar's 'Student of the year' and makes Teacher of the year it will become the Disaster of the year," RGV had tweeted.
Johar had promptly tweeted: "Disaster of the year is your territory Ramu... No one can ever replace the comfortable place you have made for yourself there."
More From This Section
It was not for the first time that the two filmmakers fought on Twitter. In 2010, RGV had made fun of Johar's 'My Name is Khan'.
The director, who is famous for his larger-than-life take on romance, said he decided to attach himself to the film because he was envious of its simplicity.
"I envy that the film was not completely mine, envy that it had the most beautiful writing and a simple story told in a way that I could never write. So I decided to substitute envy with acknowledgement. If you can't beat them, join them."
Johar admits that he is incapable of making simple films but says as a producer he wants to nurture such projects and learn from new directors.
Johar is planning to direct next year in September. "I have the story and I am working on the screenplay.