If your job considers standing or walking most of the time then this is the thing you need. If your feet start hurting after a long day at work just step on it and start relaxing and relieving foot pain. Just don't over do it because you might fall and make the problem even worse.
If there's an asshole in your life then go ahead and tell them that they're just that but in a creative and kinda cute way. It can be an amazing gift for your husband or wife and it will surely make them laugh.