I'm going to the bathroom at work when I want an extra 5-7 minute break.
I don't understand. Why are you going to hide in the bathroom?
Because my boss won't find me there.
It's understandable to want more breaks during work hours. But, be careful taking too many breaks or your boss may set a limit.
How is it stealing more time if I'm going there for more than one reason?
If you're using the restroom for its intended purpose you definitely have every right to go as often as needed!