It literally means, "That's right." But it is commonly used as a universal reply - usually coupled with an emoji appropriate to the context - when you do not know what to respond to the information you just received.
U1: Yov, mone. Enakku kannu therla yaa
Pa1: Adhu seri ð¥²
An impolite slur, in the Madurai dialect of Tamil, aimed at women and girls who fall a notch below the average beauty (frankly, they are just ugly)
Mone, indha Harshith-oda aal sariyaana soratti daa. Edha paaththu love pannaannu enakkum purla.