Audio problem: When Cher and Tai are at the party and Travis comes up to them he has 2 cups of some kind of drink and all of a sudden you hear a sound that is supposed to be something spilling. I guess they assumed that it was supposed to be the beer spilling on Cher's shoes. Well as you can see nothing falls/spills from the cup, it is just sound effects.
Audio problem: (This is extremely difficult to see and you have to concentrate to notice it). When Cher and Tai are talking in Cher's lounge room after the workout, Cher says "something good for mankind or the planet for a couple of hours", but her words don't match her mouth moving for 'hours'.
Audio problem: In the scene at the party when Tai sits up after Elton placed her on the table she hits her head on a light hanging overhead. The sound the bump makes is not consistent with someone hitting the light with their head in such a manner. It appears that it's just a sound effect added in. (00:37:30)
Answer: Malibu is a hazardous place to live. It's constantly threatened by wildfires, which burn out the underbrush. Then when it rains, there's nothing on the ground to keep the mud from sliding down the hills, so mudslides are a problem, too. She was probably referring to one of the many times that this has happened.
Krista