Britney's Wild Night - How Did It All Start?

Well, we know how it ended up - in a hotel with paparazzo Adnan!

But her night started out just as bizarrely, according to OK! Magazine. The mag claims she started out the night driving around town in her mini-cooper, behaving erratically, visiting various public restrooms (WTF?) and throwing an expletive filled fit when she couldn't book a recording studio at the last minute.

Then, OK! claims she invited another photographer to join her in her car, this one named Phillipe, and for dinner at Taverna Tony's, where, upon leaving, our photogs say she "appeared to have been drinking."

But Phillipe got the boot when Brit suddenly remembered her crush, and called Adnan up to have him meet her in Malibu.

After driving all over town, she eventually stops to take a picture of street "art" (the mural), where she went into another expletive filled tirade when the photographers wouldn't get out of her way fast enough! (Video below).

What could have prompted her extremely erratic behavior Saturday night? We know the holidays can be difficult for everyone, but this is really bizarre, even for Britney!