Not that it SHOULD be necessary to point out the obvious meanings of the passage, but should doesn't always meet with reality.
Jhn 3:3-7 Jesus answered and said unto him, Verily, verily, I say unto thee, Except a man be born again, he cannot see the kingdom of God. Nicodemus saith unto him, How can a man be born when he is old? can he enter the second time into his mother's womb, and be born? Jesus answered, Verily, verily, I say unto thee, Except a man be born of water and [of] the Spirit, he cannot enter into the kingdom of God. That which is born of the flesh is flesh; and that which is born of the Spirit is spirit. Marvel not that I said unto thee, Ye must be born again. The wind bloweth where it listeth, and thou hearest the sound thereof, but canst not tell whence it cometh, and whither it goeth: so is every one that is born of the Spirit.
Note 1: Jesus did NOT say man that is born of the water must be born of the Spirit - there is only one birth mentioned here, not two - rewording the text to make it seem that he was referring to separate births does not work.
Note 2: Jesus begins his answer with an exposition of his statement, "except a man be born anew" which Nicodemus clearly had mis-understood to mean that he should be physically re-born. (scotches the "born of heaven/from above" story).
Note 3: Red highlight regarding flesh answers the objection in red by Nicodemus. Jesus is pointing out that, no - he is not telling Nicodemus that he must be born again physically, he is talking about spiritual re-birth.