What you need is a vacation. You use what in questions when you ask for specific information about something that you do. We use what to ask questions and as a pronoun and determiner..
We can use what to ask for information about things and actions:. We can use what in informal situations to ask someone to. What are you having for dinner?
Guess what is often used to tell someone that you have surprising news. “ guess what!” “what?” “i bought a new car.” i'll tell you what i'm going to do: A) used to ask someone to repeat something they have just said because you did not hear it properly ‘could you turn the music down a bit?’ ‘what?’.
B) used when you have heard someone calling to you.