Listeners to Jennifer Lopez's hit song "Love Don't Cost a Thing" often beg the same query: When she says, "If I wanna floss, I got my own" — what is the Latina diva talking about? Surely not dental hygiene?

"No," J.Lo laughs to TV Guide Online. "That's kind of a street term. Flossing is like, if I want to go out and ride in a car, wear my nice clothes and hang out with my girlfriends, I don't need somebody to pay for things for me. You know what I mean? 'I don't need you to pay for it' — that's what the term 'floss' means." Chuckling, she adds: "It's like if you wear your brand new sneakers, [you say,] 'I'm flossing with my new sneakers.'"

Thus, students of pop culture, to floss is to proudly display one's own finery in public. (Take note for the next vocabulary quiz.) "And it wasn't a term I made up," she humbly points out. "It was a term that was just popular when we were making the [J.Lo] record, and so we used it."

Now that you've got her lingo down, you can fully enjoy J.Lo's very first concert — airing Nov. 20 at 8 pm/ET on NBC. "It was a little nerve-wracking," she admits, "but we were very well-prepared and well-rehearsed. When they first asked me to do a special... 'It would be great to go back to Puerto Rico and do this' was a thought that occurred to me immediately. They don't get a lot of concerts over there, and it was such a huge part of my upbringing since both my parents were born in Puerto Rico. So it was kind of a natural thing."