We’ve all witnessed some pretty bad behavior at the grocery store. You know — the guy who grabs a quick snack from the salad bar or the woman who leaves her cart in the middle of aisle. It doesn’t matter what store you shop at or what time of the day you go, running into rude people is inevitable. But anytime you step into public you’re at risk for your own little social blunder, as well. Whether you realize it or not, if you do any of these things, you will be seen as rude by others: sneaky Snacking Everyone know that grocery shopping hungry is never a good idea. Shopping on an empty stomach means you’re more likely to buy highly-processed, fatty food items to your cart. But it also means you might be tempted to sneak a snack. When you “sample” items from the bulk bins or salad…