Stress
The amount of stress you feel is directly related to how good you are at being called every swear word and bad name in the book. If that sort of thing bothers you, the job could be very stressful.
You need to shake off all the mean, nasty things being yelled at you and remind yourself that the customer is probably just frustrated and that it has nothing to do with you. Let their anger bounce right off of you, or you'll find yourself in knots that no masseuse will be able to massage out.
You are the person everyone complains to when things go wrong. You'll take the brunt of their wrath...even though you personally had nothing to do with why their iPad broke or their nose hair clipper gave them a sinus infection.
You will at least get to work in casual clothes and can fall asleep at your desk without anyone watching (unless you work with people at a big department store). You may be able to make your own hours, which will give you free time to spend with people you care about, or sleeping off all the stress you get from work if you choose to carry the weight of all those complaints home with you.