To understand the concept of the Chicken and egg situation you need to know the riddle of the chicken and Egg.
Its believed that chicken comes from eggs and eggs are laid by a chicken. This opens an uncertainty of if one came before the other then where did the other come from!
If you want this is a case of cause and effect. That one leads to the other and the other can not be without another.
The chicken and egg situation, therefore, refers to a situation in which it is impossible or logically hard to say which of two things existed first and which caused the other one.
Its a metaphoric adjective describing situations with two events but where it is not clear which of two events should be considered the cause and which should be considered the effect.
