It was obvious how stuck you up you were, but you did your job well and we got along without problems: until the end. You gave me the bill ($27.58) and asked if I needed change. I gave you $30 and said yes. When you returned there was only a loonie in the bill holder. I can understand that you might not have expected a tip, especially since I'm young and asked for change, but I had planned to tip you well. The only other explanation could be that you're either terrible at math or just lazy. Either way, you stole from me. I didn't leave any money and let the dollar fifty, or whatever you took be your only tip. It's just a shame because that's what you expected me to do.