Suck-up, 係babylon 搵到既解釋係咁: one who seeks to ingratiate themselves with someone of influence. 即係乜? 擦鞋仔o羅咪。cambridge dictionary 就咁講: suck up to sb phrasal verbINFORMAL DISAPPROVING to try to make someone who is in authority approve of you by doing and saying things that will please them: e.g. "Why do you think he offered to take all that work home?" "Ah, he's just sucking up to the boss."