"I've heard all kinds of crazy rumors about myself. I've even heard that I'm pregnant! I've become real good about laughing things off - I figure I'd better get used to it"

In this quote, Carrie Underwood is addressing the reality that she has actually heard many wild and incorrect reports about herself. She particularly mentions one report that she is pregnant, which she discovers particularly unreasonable. In spite of these reports, she has found out to brush them off and not take them seriously. She even jokes that she has ended up being quite proficient at laughing them off, as she knows that being a public figure means dealing with incorrect details and chatter. By stating she needs to get utilized to it, she is acknowledging that these reports are likely to continue and she has actually learned to not let them impact her.