Child:papa aunty ka pait kion phola hai?
Father:tujhey sub pata hai!
Child: nahin pata promise!
Father: in k pait main pani bhara hay
CHILD:Oh No! Bacha to doob jaye ga!
Engineer: a person who knows a great deal about very little and who goes along knowing more and more about less and less, until finally he knows practically everything about nothing.... ;->