Aisa kya hai jo patni apne pati ko jeevan mein kewal ek baar dikhati hai aur gharwalon ko roj dikhati hai?

hiiii...i am bhavin patel a student of MCA so i dot't have this type of power to think a social question...but today my friend askd me a question and i gave him challenge so pls help me.... pls mail me your answer on bhavin.patel143@yahoo.co.in otherwise msg me on +919558418035.