Communication Breakdown

A funny scene this morning en route to the post office. A guy was trying to parallel-park a rather large van, backing it into a rather small space of which he didn't have a good view from his mirrors. Another man, a passerby, was kindly trying to help guide him in. The second man was elderly and apparently did not speak English all that well. He was making emphatic, encouraging hand gestures, clearly indicating "Come on! Come on! You've got plenty of space!" But at the same time he was shouting "STOP! STOP! STOP!" The driver was visibly perplexed.