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Fans are scratching their heads over a new teaser video posted on YouTube by Jennifer Lopez. 

The 13-second clip starts with the superstar dressed in black leather crouched over as a explosion goes off behind her.  The action sequence quickly shoots to footage of J. Lo crawling her way through an air vent and jumping through a gap. 

The only clue is the video's title, "#GetJenniferThere," and the star writes in the description that "something big is coming soon."  

More hints are leaking with the help from "TMZ."  The gossip site caught Lopez filming the video in Los Angeles last week.  Sources tell them it's part of a top-secret national commercial that will premiere during this weekend's American Music Awards.