"So when you start touring, women are definitely going to check you out first"

In this quote, Gavin DeGraw is recommending that when he starts visiting, ladies will be the very first to pay attention to him. This might be due to his fame and popularity as a musician, or possibly his excellent looks and charm. DeGraw is acknowledging the reality that women are frequently drawn to musicians and performers, and he is expecting that this will be the case for him as well. He may also be implying that females will be more interested in him than males, as they will be the first to "check him out." Overall, this quote highlights the attention and appreciation that musicians typically receive from their female fans.