 Jim Farber of the Daily News said the pre @-@ chorus was the most repetitive in a pop song since The Shaggs 's " Gimmie Dat Ding " . Jim Abbott of the Orlando Sentinel called it " basically an adult update of her teen @-@ pop tease act " . Ian Watson of Dotmusic wrote that Spears sounded " trapped on this single . Not trapped , as in desperate and distraught , but trapped as in literally frozen – like she 's been placed into a robot on a production line and she has to sing these words , dance these steps , work it like this , until the spotlight snaps off and the factory 's powered down for the night " . The song has been nominated for a Grammy Award in the category of Best Dance Recording on December 2 , 2009 . Spears had previously won the category in the 2005 ceremony for her single " Toxic " . However , it lost to Lady Gaga 's " Poker Face " . 
