1. Don't purchase undergarments at the thrift store. I hope I don't have to explain why. Do you really want to share panties? There are so, so many reasons why this is bad. You don't have to do it even if you are really struggling financially. You can get bras and panties at Walmart, Target or even places like Forever 21 or Rue 21 for super, super cheap AND no one else's cooch has inhabited them before. These places have sales going on all of the time. I've paid .99 cents many times for NEW, never before been used panties (TMI).
2. Take mace (pepper spray) with you for the weirdos. I'm fresh out, but there have been times when I've been approached by some desperate idiot pretending to be selling something or crying that his car is broken down. Just smile politely (if you can even do that) and walk away. I've had some interesting times. Some people are just different but you never know when you will come face-to-face with a sociopath. I'm not talking the sociopaths we work with or are related to either. I'm not really worried about being out of mace; I go on Saturdays mostly when there are always a ton of people out. I went on a Sunday morning once and I'll never go again. It was one of those mornings where my intuition was screaming for me to leave the thrift store and I gladly obliged. I'm not afraid of firmly telling some douche-nozzle NO!!! either. I can also give out a really nasty side-eye too.