To avoid such inappropriate phrases, one should cultivate good moral and ethical values. Think about whether what you are about to say is acceptable in a general social setting. Also, surround yourself with positive language environments, like positive - minded friends and positive media content.
In ancient myths from various cultures around the world, we find stories about the afterlife, the relationship between humans and the divine, and how to live a virtuous life. There is no room for such offensive 'guy sucks cock stories' as they go against the very essence of what ancient myths were created for.
I'm not aware of any positive or appropriate stories with such a vulgar concept in mainstream literature. Literature usually focuses on more positive, moral and inclusive themes.
Rather than delving into such inappropriate stories, we should encourage a society that promotes love, respect, and positive interactions within marriages. There are so many wonderful aspects of married life to focus on, like mutual support and shared dreams.
There could be a story where a teen sucks at understanding the old man's tales from the past. The old man tries to share his war experiences or how things were in his youth, like walking miles to school in the snow. The teen just can't seem to relate at first. However, as the old man keeps telling these stories, the teen gradually starts to appreciate the different era the old man grew up in.
Definitely not. Sharing something like that with a sister is highly unethical. Family relationships are based on respect, love, and appropriate boundaries. This kind of sharing violates those boundaries and can cause discomfort, harm to the relationship, and is not acceptable in a civilized family environment.