Well.......he would be saying the truth, and still, his nose wouldn't grow. that's because his nose isn't growing at that moment, but it does grow when he is lying and he isn't lying about his nose growing when he lies. That means he is saying the truth. So therefore his nose won't grow.
Ah, you see he is not downvote begging, as you can see he wants to downvote beg in order to get upvotes, therefore he is not directly downvote begging! Thank you for letting me know.