To dream of oral sex represents feelings of total submission. Serving others or doing whatever someone else wants. Doing all this asked or required in a way that makes life easier for someone else. Completely catering to others needs
Positively, oral sex can represent helping other people or a total concern for their interests. Feeling that someone is making your life a lot easier. It could also point to enemies becoming completely subordinate to you. Feelings about life being too easy for you.
Negatively, oral sex may reflect caving in completely to fear or giving all your power away to a subordinate state. Feeling disgusted with yourself for having let someone feel powerful over you with their arrogant fantasies. Alternatively, it may also reflect feelings of surprise that someone would do you a favor. You may not be respecting yourself enough to believe you deserve something easy happening to you.
To dream of getting oral sex represents feelings about a person or life situation doing whatever you want or ask. Experiences where you are feeling good being helped perfectly. Enjoying favors, gifts, or something free.
To dream of someone evil or negative getting oral sex represents a negative situation that is subordinated to. Giving up all power to someone that will abuse it. Alternatively, it may reflect your own abuse of others good nature or compliance. Enjoying having a "slave."
To dream of giving oral sex to an ex-girlfriend or boyfriend you still fantasize about can represent you empowering your sexual desire for them. A sign that you need to put more effort into getting over them. Alternatively, it may reflect subordination in some way.
Example: A man dreamed of seeing Satan getting oral sex. In waking life he had succumbed to his drug addiction. He felt powerless to stop himself from giving in to the "evil" of his addiction that he felt wasted his life.
Example 2: A woman dreamed of seeing a small dog giving her oral sex. In waking life she had gone back to school to train for a new job and found that school was too easy. She felt like her new education was being given to her.
Example 3: A man dreamed of his older sister giving him oral sex. In waking life he was experiencing a lot of success with his business, but it required managing responsibilities in ways he wasn't expecting.