Usually uneducated whites that inhabit trailer parks, low income apartments or live out in the woods.

They tend to eat pork rinds, KFC, varmint critters and drink a lot of pop and cheap beer.

Their mode of transportation is easy to spot - excessive exhaust, no muffler, numerous rust or primer stains, the WE SPEAK ENGLISH IN THIS COUNTRY bumper sticker and bungee cord keeping the trunk down.

The tend to vote Republican even though Republicans never make their lives any better.

Their sole pride is the big screen TV so they can spend the majority of their time watching WWE, Springer, Spongebob, South Park and NASCAR.

They have 4 kids before the age of 25 and their kids are little version of them - dumb, fouled mouthed and smelly.

White trash doesn't just apply to low income hillbilly families who live in a trailer park, white trash can be found in any neighborhood of any social class. Some perfect examples of white trash are:

Having broken appliances, plumbing fixtures, and/or stripped cars on their front lawn.

Someone who lives in squalor, has garbage piling up all over their house and feces caked into the carpet while having 14 neglected incest kids with adhd running amok.

Being 14 and pregnant and if the kid comes out white, all the possible fathers are related to her.

Has a meth lab and/or meth addiction.

Someone who collects welfare or disability even though the individual is perfectly able bodied.

Someone who is missing most of their teeth before the age of 20 (due to lack of oral hygene, getting into drunken fights, and/or meth use.)

The watchers of and the guests on Jerry Springer, Maury, Steve Wilkos, Dr.Phil, and Judge Judy.

The watchers of American Idol, Dancing With the Stars, Mike and Molly, The big bang theory, 2 and a half men, NASCAR, Keeping up with the Kardashians, The Real housewives of anything, AFV reruns, and Cops also fall into this category.

If you are blood related to your biological parents in more than 1 way, making the "family tree" into the "family stump".

Somebody who has been on Cops.

Miley Cyrus.

An individual that may or may not be poor, but is monumentally ignorant and quite possibly stupid.

The word "White Trash" is thrown around a lot these days. People usually corollate white trash with being poor. You can actually be white trash and be on any level of the social class; rich, poor, middle class, poverty, whatever. Some people are simply less privileged than others, so they can not be judged by the things they posess.
The definition of White Trash sort of goes along with Jeff Foxworthy's definition of Redneck which is "An extreme abscence of sophistication." That's all white trash is; however, even if one has nice things that person can still be white trash. White Trash people are often times so unsophisticated that they do not even know they are white trash. If one is truly white trash that person is not supposed to know about it.
It is just a coincidence, but many white trash people have bad taste in things. Nascar lovers are often white trash. People who get drunk are often white trash. A drink or a glass of wine are nice every now and then , but getting plastered and shit-faced is just stupid. What's even more white trash than that is saving all of your beer bottles and putting them on the counter. As if they need to be on display. They exhibit other bad habits. They smoke a lot. They have very low grooming standards. The smell bad. They have terrible taste and are badly dressed; tank tops, bandanas, etc...They put their couches on their front porches, and it just looks hideous. They do not take very good care of their kids. They sometimes abuse them or are very negligent. The beat their spouses. Their English is very improper. They also like to curse a lot. They think that saying the "f-word" every other word makes them sound like big people.
What makes people more white trash than anything is their moral judgement however. They take pleasure in hurting others. They are racist. They sleep around a lot and don't even bother to use protection. They date people who do not respect them, or they do not respect their partners. They pick on other people to make themselves feel good. They love to be verbally abusive. They enjoy picking fights, and being rude because it gives them pleasure. Anytime they are nice to other people there is always an alterior motive for some personal gain. They are greedy. They are selfish. Instead of supporting their families they will buy extravegant things for themselves such as a high definition television. White trash people are just bad people. They basically have no social grace, and they feel that the world owes them.

subsidized housing living, HUD, section 8 female with loser boyfriend or good for nothing layabout husband with a perpetual disability scam having babies on welfare

Ugly, overweight, uneducated, entitled, ignorant, bigot. Hates anyone with the brains or talent that they lack. Rude, demanding, pushy, heinous manners, doesn't tip at restaurants, always looking for handouts and freebees. Spends hundreds of dollars each month on useless crap while someone else picks up the tab. Racist, homophobic, hits children, curses loudly in public loves Wal-mart.

Kesha.

What you live next to in the Midwest (me) or the South if your not in a big city or large town. They can be defined more easily with these following, short descriptions:
-Is very poor
-Smells really bad
-Eats pork rinds, squirrel, and drinks beer
-Wears clothing from Dixie Outfitters, Wrangler, and NASCAR
-Has vehicles up on cement blocks
-Has unkempt hair and an overall nasty-looking appearence.
-If you can hear them laughing and loud-mouthing very clearly from 200 yards away.
-If you see living room furniture and useless appliances outside.

White people, who are usually poor although not always. This term differs from terms such as cracker, or hillbilly that just describe poor white people. White trash, however, describes the person's lack of morals or respect. To see these people at their best, watch shows such as MAURY, or Jerry Springer, or any MTV reality show Teen Mom, Jersey Shore, Real World, etc.