Oral sex in a dream actually reflects intimate conversation in waking life.

If you are giving oral sex in the dream then it may suggest that you need to or you have recently initiated a deep intimate conversation with someone in waking life.

If you are receiving oral sex then someone may have recently initiated a deep conversation with you.

If you are watching two others have oral sex then ask yourself if you recently witnesses or are aware of a deep or intimate conversation that you were not a part of.