For example, if the RHS of your cylinder has a slightly larger radius than the LHS the cylinder will commence turning to the left.
The upshot is the thick side picks up more snow than the thin side and the disparity in radii increases more rapidly still. The cylinder becomes a truncated cone which turns sideways and halts!
I think part of it is that most of us speak more loudly to others when we can't hear them very well, e.g. when wearing headphones or on a mobile in a train