What is Baba Ji Ka Thullu - Joke

Girl and boy was Chatting on
Facebook....:

Girl - M very confused about 1 thing from last couple of days ...

BF - Tell me I will give you the
answer! !

Girl - What is Baba Ji Ka thullu??

Boy - ok ,when you Said me to
Buy a Daimond Ring for you last birthday, what did you get ??

Girl - Nothing !!!!!

Boy - This is called Baba Ji Ka Thullu! !!!!