Which is correct WHOSE your Daddy or Who is your daddy?

Answer 1

You can say 'Who is your daddy'? or 'Who's your daddy?' but not 'Whose'.

The common confusion between the correct usage of "whose"and "who's" results from the similarity in their pronunciation. In deciding which is correct in any given instance you should always remember that possessive pronouns never take apostrophes, even though possessive nouns do. So "Who's" can only ever mean "who is," as in "Who's going to buy the next round of drinks?" or "who has," as in "The person who's been drinking my beer is dead!"

"Whose" is the possessive form of "who" and is used as follows: "Whose turn is it to pay for the champagne?"

They have also published a book "Common Errors in English Usage"

that you might buy and sit it alongside your dictionary and your thesaurus at your elbow as you write.

Answer 2

"Who is your daddy?" is the correct phrase. "Whose your Daddy" is grammatically incorrect.