Dang yo can be used as an universal remark or reaction when you don't know what the expected reaction from you is. It could signify acceptance or rejection of the speaker(you) to a given statement. When confused, just say 'dang yo', and let the listener interpret it the way they want. Use it to avoid controversial topics.
Yodan Son, an all powerful being who has come to earth to destroy it whenever he feels it's the right time.
Person 1:"Did you see Yodan Son today?"
Person 2: "Yeah, he looked at me and before i knew it, i was on my knees sucking him off."
Person 1: "I wish I could suck him off too..."