What is dead lock ?

શ્રેય નો એક મેલ ફોરવર્ડ અહિયાં મુકુ છું. 

બહુ જ સરસ રીતે ડેડલોક સમજાવ્યું છે. 
Boss To Secretary
For a week we will go abroad, so make arrangement.

Secretary To Husband
For a week my boss and I will be going abroad, you look after yourself.

Husband To Secret lover
My wife is going abroad for a week, so let's spend the week together.

Secret lover To Small boy (whom she is giving private tuition)
I have work for a week, so you need not come for class.

Small boy To Grand-father
Grandpa, for a week I don't have class 'coz my teacher is busy. Let's spend the week together.

Grandpa (the 1 st boss ;) ) To Secretary
This week I am spending my time with my grandson. We cannot attend that meeting.

Secretary To Husband
This week my boss has some work, we cancelled our trip.

Husband To Secret lover
We cannot spend this week together; my wife has cancelled her trip.

Secret lover To Small boy
This week we will have class as usual

Small boy To Grandfather
Grandpa, my teacher said this week I have to attend class. Sorry I can't give you company.

Grandfather To Secretary
Don't worry this week we will attend that meeting, so make arrangement.

This is called Deadlock  :-)