Pretzel Circuit

What   we did today in class was how a battery gave electron energy to turn on the light bulbs. So what we did was that if you were not the battery or one of the two light you were a electron so we did a series circuit and an a parallel circuit, on the series circuit we went on around the tape giving each light bulb 1 voltages and when we didn't get pretzel we had to stop at the light bulb because we had no energy to give to it , and when it was parallels the current adds up .