Teacher: zameen per rehny waly

Smile is the 2nd best thing
you can do with your Lips.
What is first thing? ..??..
Teacher: zameen per rehny waly janwer bachy dety hain, treat
hawa main urnay waly andy daitay hain,

Woh konsi cheez hai jo hawa mai bhi
urti hai or bachy bhi deti hai??