Bizarre public restroom behavior

Okay, this one was a new one on me. I know it's an odd topic and you're all probably going to be rolling your eyes and wondering what my problem is and why it's my business, but I can't not post this. ;D I was using one of the stalls in the 3-stall public restroom at work when someone comes in and goes into one of the other stalls. Now, you can't help but hear what the other people in the bathroom are doing, so I noticed that she flushed the toilet before she even closed the stall door. Since people often don't flush, I just figured the person before her had done so and she was taking care of that before using the toilet.

However, next I hear her relieve herself, then flush, almost simultaneously, without using TP (the TP rollers in this bathroom are very loud so you definitely know if they've been used). Then she gets TP. Then flushes again. Then uses more TP. Then flushes again. Then uses yet MORE TP. Then flushes AGAIN.

So this one woman flushed FIVE times for one excretory event. The average older toilet (and believe me, these are old!) uses between 5 and 7 gallons of water per flush. So she just wasted at least 25 gallons of water, and possibly more like 35 gallons. In a state that's had a 3-year running drought cycle which is predicted to continue.

WHY?????

What possible excuse is there for wasting that much water? I have, on many occasions, overheard people who flush both before and after the main event (which I find odd as well) but FIVE TIMES?