Let's replay that in the correct rhythm as it's a first line ..a'mouse - A man does what his woman says Chalky - When his heart and his loins are ablaze
But leaves behind stubble [anonymouse/Chalky] I think the line does scan if you treat "woman says" as a feminine rhyme ("A man's got to do what his woman says", rather after the manner of "A marvellous bird is the pelican.