You've just moved the goalpost, now instead of people not knowing what the meaning is, you've asked them to find it.
Ok, how do you find it? Oh, we don't know again :)
The right answer to 'what is the meaning of life?' is to ask for definitions of terms. What do you mean by 'meaning'? How do you know life has or ought to have such a property, that you'd go looking for it?
In other words, the only right answer to 'when did you stop beating your wife?' is to point out that it is a loaded question aka invalid question, instead of scurrying to try and answer it :)
Meaning of life is a variation of when did you stop beating your wife. One presupposes you did beat your wife, the other presupposes there exist meaning and it is important to find.
Those are unjustified presuppositions.