Los Angeles: She faced severe criticism for forgetting the lyrics to the American National Anthem during the Super Bowl, but pop star Christina Aguilera has now poked fun at her mistake.
On the `Late Show with David Letterman`, the 30-year-old singer mocked at her now-infamous blunder, asking aspiring singers to memorise the words of the `Star Spangled Banner`, reported Contactmusic.
While shelling out tips for aspiring singers, the `Beautiful` hitmaker said, "Try to be born with an awesome voice! If your name is Bieber, change it to Larry Bieber," said Aguilera.
"Be a triple threat - I`m a singer, actress and part-time tax accountant," before quipping, "Very important tip - learn the lyrics of the National Anthem."