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general::
Phrase(s): a sucker for someone or something
someone who is prejudiced in favor of someone or something; someone who is drawn to someone or something. • I’m a sucker for a pretty face. • Ted is a sucker for any dessert with whipped cream on it. • I don’t know why I volunteered for this job. I’m a sucker for punishment I guess.
McGrawhill's American Idioms And Phrasal Verbs