On a short ride today I was trying to pass a younger couple who were completely oblivious to the fact that I was sitting behind them yelling "on your left" and "Please move to the right", after about 10 minutes of this I just moved to the far left side and passed them. To make a long story short the couple caught up to me after a few stoplights and started lecturing me about how I should have waited longer until they saw me then passed them.
Im just wondering if I was right to pass them or should I have waited longer? Also is there some kind of small megaphone that you can clip onto your bike? Im sure that would come in handy.