Another driver seeks honk translator

Another driver found he could have used horn translator during storm. On a dark street with pouring rain, man ahead in Camry kept wandering out of his lane. In an attempt to get Camry driver to stop swerving, driver behind honked resulting in finger flipping from cyclist who assumed he was honked at by driver. Apparently the cyclist would have preferred to get hit by Camry that was edging closer to him. Obviously neither Camry driver nor cyclist were up on their honking translation skills. Driver would have risked the potential annoying "did you mean ....?" fault in honk translator design.