Possible Meanings Of Sucking In Dreams
To dream that you are sucking on something can indicate that you need emotional nurturance. You are expressing a desire to escape from your daily responsibilities. Alternatively, the dream may point to low self-esteem and feelings of inferiority. The dream may also be a metaphor for "sucking up" to someone or that you are a "sucker" in some waking situation.
To dream that someone is sucking on you may suggest that you are feeling drained, physically and/or emotionally. You feel that you are too much of a giver in a situation or relationship.
Oracle Dream Interpretation