"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."
Catholics are the original "born again" Christians.
For a Catholic to say they are a "born again" it usually is employed to mean they have arrived at an adult decision to know, love and serve God in this life, i.e., they have accepted Jesus as personal Lord and Savior.
Catholics have been doing this since the time of the Apostles, we just use different terminology.
Since we don't employ evangelical terminology, evangelicals often assume we're no "born again," i.e., we have not accepted Jesus as Lord.
In other words, we Catholics often feel the need to employ evangelical terminology just so we're not seen by evangelicals as other than committed Christians.
Good answer!
Being born again is not evangelical terminology, it came straight from the mouth of our Savior:
John 3:3 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.