What's a dead giveaway that someone has come from poverty?

From my perspective having grown up weaving between working class and poverty line. -How far I can make a $20 stretch. -The time frame I give my friends that I am available for whatever plans they are making so I can scrounge up money. -I have clothes that I've had for 8 years. -I feel bad/guilt every time I see a homeless person even though I have nothing to give them. -I know how long my car can go with the fuel light on before I do need to fill up. -The time it takes for me to save up for something that people take for granted (I had a friend who I would work out with on occasion who had a pair of tennis shoes that he never used that I would ask to borrow and he eventually got angry about it even though at the time I could not afford a pair of shoes. Took me another 2 months before I could. -My best friends family jokingly harasses me about being cheap and while I get that it's a joke, it still hurts deep down because I wouldn't be if it was a possibility (at least I think so, I won't know until I can live comfortably) [My friend understands better than his family and doesn't joke about that kinda stuff outside of me visiting his family] -They know how to budget and can distinguish wants from needs without hesitation -The shock and cynicism towards the well off who have a lack of appreciation for what they have. -How long they can put off getting things (outlined above when referencing gas) -How thankful and appreciative a person is -Whether or not an effort is made to converse with workers and an effort to tip well. I don't eat out much but when I do I try and tip 20% and push those I go with to do the same. -How much they are willing to talk about what they have/what they make/what they do on a regular basis -The notes they take of debts owed and the efforts they make to pay it back even if a person does say not to sweat it. I still have a running tab of everything I owe to my friends from things from 4 years ago.

This is just a stream of thought and I left out some of the common stuff I saw throughout and also reiterated a few things.

/r/AskReddit Thread