"lady, running down to the riptide taken away to the dark side i wanna be your left-hand man  --vance joy, "riptide""
a man who is being seen on the side by a woman who has another man who is her boyfriend
""lady, running down to the riptide taken away to the dark side i wanna be your left-hand man  --vance joy, "riptide""" What is the definition of "left-hand man"?