Why is this song so catchy!?

I’ve been listening to this song on repeat ever since I first heard it ( after I curiously decided to look up the original version on Geeth’s insistence) two days ago. I love the ease with which Dhanush sings this song, oozing the right amount of attitude in the right places (…. a-di). They lyrics, of course, are hilarious but so beautifully capture the insanity of relationships in this day and age  - (God I am dying now-uh, she is happy how-uh?)