You are right. It is pun on the word "Adi" which means line or sentence and also blow. Thiruvalluvar wrote "Thirukural" which are two liners.PJ sir,
I wonder if my understanding is right..I can read Tamil but I might not understand every word I read>
All I can understand here is: In two lines Thiruvalluvar can make a person understand but a wife makes you understand with one BLOW(One hit).
Am I correct?