r/JEENEETards is a community on Reddit, the members being preparers of JEE and NEET entrance exams in India. Lakhs of people give these exams. This commnity's name is a portmanteau of words 'JEE', 'NEET' and 'retards'.
He is also a fellow jeeneetard, so he must also know the internaljokes of r/JEENEETards