I had to go through a lot of training when I started laboring at the medical cannabis dispensary; I had to attend an 8 seventh training & education class on marijuana & its effects; When this class was over, I had to take a test. If I didn’t pass the test, I would not be able to labor at the medical cannabis dispensary. It was one of the most nerve-wracking experiences since our afternoons in school. I was sad that I would not pass, but most of the information was easy to learn & easy to remember! One of the classes that I took was about buyer service & one recognizable lesson was about spotting counterfeit bills. I listened intently when they talked about the counterfeit bills, because I was recognizably interested in counterfeiting, and the first time a counterfeit bill came into the store, I immediately recognized it. The buyer came in to buy $200 worth of medical marijuana supplies.He had 4 $50 bills & they looked very strange. I was laboring the counter at the time. While I was feeling the dispensary order, I told our boss that I was sad the bills might be counterfeit. Even though they passed the marker test, they still felt different in our hand. They were almost too heavy to be a $50 bill. I knew it was a long shot, but I insisted that our boss accompany me to the counter. The guy was surprised to see both of us & he made a quick excuse to go to his car. Every one of us never saw the guy again.