mooch off (of) (someone or something)(redirected from mooches off of them)
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mooch off (of) (someone or something)
To ask for or obtain (something) through the charity of someone or something; to sponge off someone or something else. My brother has been mooching off me and my wife ever since he lost his job. You can't expect to get very far in life just by mooching off of the success of other people.