Konsi chiz hawa main bhi urti hai aur bachay bhi daiti hai

A teacher poses a riddle: what flies in the air and also gives birth? The answer is an air hostess.

Teacher: zameen per rehny waly janwer bachy dety hain,
hawa main urnay waly andy daitay hain,

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

Answer: air hostess