We hear what we want to

especially, from Tunmun. The story teller that she is, Tunmun is always making some sounds comprised randomly of syllables Na, ma. pa, ya ,da etc.

Tunmun says "papapapapapa" and Vibhu declares she is calling him
Tunmun says "mammah" and I declare that she is calling me
Tunmun says "Aaaaayaah" and Venky thinks she is saying "Bhaiya"

This is what takes the cake. Tunmun's part time nanny said that she can call her name - "Waheeda". WHAT? Tunmun can say "Waheeda???"
Turns out Tunmun can say "Aadaaah". There! she is saying "Waheeda" proved her nanny with a smile :-)