The meaning of Suck in dream | Dream interpretation
Desire to return to the breast, to be cared for and nurtured without responsibility. Also, you are being a sucker, or sucked into something.
Dream of sucking signify that you are hungering for emotional, physical or spiritual sustenance. This dream may be showing you where you are needy and overly dependent, and that it is time for you to grow up and take responsibility for fulfilling your own needs. See Vampire.
(Bleed; Drain; Tap) To suck someone in a dream means to take money from him. Sucking someone’s breast in a dream means swindling money from his wife. Sucking someone’s nose in a dream means taking money from his pocket. Sucking someone’s thigh in a dream means taking money from his clan.
Sucking is an instinctive act of seeking nurturance.
A dream about sucking can relate to childhood feelings of being nurtured or of being dependent. There are also numerous slang usages of this term, including advice to “suck it up” and “sucking up” to someone in authority.