Rob Brunner
October 14, 2009 AT 03:33 PM EDT

Britney Spears’ song about threesomes — a new track from her upcoming The Singles collection — will debut at No. 1 on Billboard‘s Hot 100 this week. It’s just her third No. 1 single ever (after “…Baby One More Time” and “Womanizer”), and the first No. 1 debut since Taylor Hicks’ post-Idol-victory tune “Do I Make You Proud” more than three years ago. It’s also the first non-American Idol song to enter the chart at No. 1 since Lauryn Hill’s “Doo Wop (That Thing)” did it almost 11 years ago, according to Billboard.

So does this huge first week mean Britney’s comeback is now complete? Or do people just really, really love Peter, Paul & Mary?

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