'Lusty' in the title primarily means 'strong' and 'spirited'.

Just as the Kirk Douglas film Lust for Life means 'appetite' or 'love' of life, not 'pimp 4 life' YOLO.

Predictable plot but still interesting to watch. The title is a little misleading, however. Although Robert Mitchum and Arthur Kennedy are hunky, there's really not much "lusty" about them in this movie.