[Porsche-O-Phile]

Nothing wrong with that. However, you're the one bragging about how much fun it is to deliberately look like a vagrant and then (har-har) get into a nice shiny car, presumably to teach people a lesson about being judgmental. What a ridiculous and juvenile game to revel in. The fact of the matter is, no matter HOW dirty a job you work (and I've worked a few), you can often take the time to change. Also, the perception of people is not simply one's clothing. It's your mannerisms, your speaking, whether or not you have all your teeth and whether or not it looks like you've trimmed your fingernails in the last six months. Stuff like that - it's the complete package that makes someone come off as a shlub or a normal person.

Most people can tell the difference between a respectable person who just happens to have some dirt on them from working in the yard or wrenching on the car, and someone who doesn't care about themselves, is uneducated and slovenly by nature.

Daring people to judge you as a "vagrant" through your deliberate choice of appearance, then getting indignant when they do (telling someone to "piss off", for example) seems rather contradictory to me. If you don't like being perceived as a vagrant, maybe find ways to not look/act/come off so much like one in the first place.