"Ne demek" is a Turkish phrase that translates to "What does it mean?" in English. So your query might be asking:

• "How old are you?" – which is an English question asking someone's age.
• "Ne demek?" – which means "What does it mean?" in Turkish, possibly asking for the meaning of the phrase "How old are you?"

If you want, I can explain the meaning of "How old are you?" or help with anything else!