Think I have committed shirk and kufr

I was singing a song with my little sister but we were just playing around and laughing and one of the lyrics are “All I want for christmas.” It is not a Christmas carol, but that is one of the lyrics. We were laughing and I sang it and right after I realized what I had said I stopped singing and said Astaghfurillah and said the Shahada. Did I commit shirk and am I a kufr? Edit: I went on AboutIslam.com and they have a live chat where you can ask questions and get answers quickly. I asked this and the person I was talking to said that I am fine because deeds in Islam are judged by intention and because my intention was not bad I have no sin. But to be safe I will ask for forgiveness from Allah swt for the error.