Why need clothes

Ankit is in India, where he is staying at his Nani's place (Nani = Mummy's Mummy).

Nani has given Ankit a bath and is drying him up and telling him to put clothes on when done. Just then, one of the puppies in the house walks into the room.

Nani says: See, the puppy is here. He is looking at you. You should quickly go and put your clothes on.

Ankit: Yes, I should hurry. Otherwise the puppy will think my nunnu (hindi equivalent of 'weenie') is a worm and eat it up.