A party who einstein attends it

Einstein attends a party.who someone built it,and during the the party.woman wants from Einstein.to explain the theory of the relativity for her.then he said :-

I walk with a blind man one day .then I said that I like the yogurt. The he asks me :- what is the yogurt ?
Then I said :- it is a white liquid.
Then he said :- I knew what is the liquid. But what is the meaning of "white" ?
Then I said :- it is the colour of the pelican's feathers.
Then he said :- I knew what are the feathers. But what is the pelican ?
Then I said :- it is a bird. Who has a bendy neck.
Then he said :- I knew what is the neck. But what is the meaning of the "torsion" ?
Then I take his arm . and I extend it and I twist it .and I said :- this is the meaning of the "torsion" . then he said :- now, I know what is the "yogurt"!!!
Then Einstein said to the woman :- do you want to know what is the theory of the relativity ?