"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'," Varma posted.
Karan did not take much time to respond, tweeting: "'Disaster of the Year' is your territory Ramu (RGV)...no one can ever replace the comfortable place you have made for yourself there."
Varma then tried to explain himself.
"Hey Karan, my tweet was in a series I put on Teacher's Day and that tweet was about someone taking off from you meaning it a compliment," Varma posted.