Old man/old tree

How on earth did Rahul come to the conclusion that Gauri might have meant old man when she said old tree? 

he saw that man going on the road

Kyunki wo Rahul hai. Wo bhagwan ko chodkar har baat pe believe kar leta hai.

woh ab kisi kaam ka nahi raha

Good thing it wasn't an old woman passing by. Just imagine him trying to find out if she is hiding the Shivlings behind her sari!

oh no that would be crass and gross