"Backpack Kid" has pulled off his smoothest move yet, surprising a Connecticut teenager at prom.

Dressed in a silver suit, Russell Horning, 16, made his way into the dance to surprise Libby Gardner of Fairfield, Conn., who'd emailed him asking him to be her date, but she never heard back.

Gardner's shock at seeing Horning quickly wore off and she joined him on the dance floor, where they performed his signature "flossing" move made famous from his appearance on the "Saturday Night Live" stage alongside singer Katy Perry. 

The sweet surprise was made possible with the help of Amazon Teen, which secretly planned the encounter. 

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