A Christian is not someone who is merely religious, goes to church, prays prayers, reads bibles, was baptized, or any of that stuff. That stuff is good, but if there's no inward change that results in outward change and good fruit, they are not truly saved.
In addition, despite what many say, God's Grace is NOT a license or a covering for sin, and Christians are not unconditionally eternally secure. A Christian can lose their salvation by renouncing Jesus Christ, especially during times of persecution, by unrepentant willful sin, or by believing a false gospel, or by taking the Mark of the Beast during the 7 year Tribulation period when the Antichrist will be reigning and will require people to worship him and take a mark of loyalty indicating their loyalty to him(the Antichrist) in order to partake in commerce as well to avoid beheading. However, the Bible warns that if ANYONE takes the mark, regardless of the reason, they will spend eternity in the Lake of Fire. Taking 666 is an unforgivable sin. Revelation 14:9-11.
A REAL CHRISTIAN: A person who is humble, who shows by their ACTIONS louder than their WORDS that they have something different(Jesus).
But even as friends he's perfect. He will ditch even a girlfriend that tries to mess with you. You could be in love with him and see him with another girl, but as long as he's happy you're happy. Yet if he's mad at you, you feel so ashamed and as if your a burden. Over all, hes the person that you haven't lived till you see him.
Christian: Not even a little.
Christians are not to be mistaken for hypocrites who follow a holier-than-thou attitude to life. Real Christians are humble and give all the praise back to Jesus.