'Out of the Roof'

"What people see is two seconds of insanity of me arching me to the lords," singer writes of standing through a moonroof on 101 Freeway

Britney Spears dismissed headlines about her bizarre behavior on a Los Angeles highway this week, writing on social media, “Nothing is what it seems.”

Earlier this week, video of the singer emerged that appeared to show Spears standing through the moonroof of an SUV that was driving on the 101 Freeway. At one point, Spears arched her back and sprawled atop of the Mercedes while the car traveled at 45 miles per hour, Page Six reported.

Spears spent about two minutes standing through the moonroof before the SUV — driven by a man in a cowboy hat — exited the highway and pulled into a gas station. “Britney just went through the sunroof for a quick moment,” a source reasoned to the Daily Mail. “She wanted to see what the traffic was about up ahead because the cars came to a stop.”