If you're a Britney Spears fan, you DEFINITELY know the opening line to her hit 2007 song Gimme More.
But sadly, the 35-year-old singer totally forgot where the "It's Britney, bitch" line came from!
On Monday, the mother of two did an interview with 99.7 Now's Fernando and Greg where they tell the pop star that gay guys greet each other with that iconic saying.
However, when they ask the musician about its origins, she's totally clueless!
Miz Spears said: