Trey Songz's chart-climbing hit 'Na Na' is catchy, so much so that even Jimmy Kimmel wants to know what it's about. The singer hit 'Jimmy Kimmel Live' to translate the seductive number in a funny skit.

"Is the song about your Na Na?" Jimmy asks, referring to Trey's grandma.

"Oh, Na Na. Look what you done started," Trey starts.

"OK. It appears that with 'Na Na,' things are headed in a sexual direction," Jimmy explains. "I question why you behave inappropriately, even though I am aroused," he continues.

Trey can hardly keep himself from cracking up during the funny interplay.

Later in the show, Trey performs the track as well as his single 'Foreign.' The cuts are from his new album 'Trigga,' which hit stores this week.

Watch Trey Songz Perform 'Na Na' on 'Jimmy Kimmel Live'

Watch Trey Songz Perform 'Foreign' on 'Jimmy Kimmel Live'