Horse sense is something a horse has to prevent it from betting on men.
Horse sense is the Royal substitute for intelligence.
Horse sense is just the ability to say "neigh."
Horse sense is when a fellow knows enough to stay away from a nag.
Horse sense is what keeps a woman from being a nag.
Horse sense is stable thinking.
Horse sense is a good judgment which keeps horses from betting on people.
Horse sense is what keeps horses from betting on what people will do.