The best part of shopping in Costco is arguably the free samples, but you should note that it's not cool to jump the line for them. At a Greenville, South Carolina Costco things got a little crazy among a group of 70-something-year-olds after one man (man one) says another man (man two) cut in front of him to grab a free sample of cheese.Then, at another free sample station man one spotted man two and told him sarcastically that he could "get in front of him because he knew he would just cut the line anyway." Man two then called man one a "jerk" and clocked him on the side of the head, knocking off his hat and glasses. No arrests have been made regarding the July 26th incident yet, as man two had left Costco by the time police arrived, but later admitted to police that he had been involved in the incident. Police are reviewing surveillance footage to determine what really happened since the two men told different stories.