He was filled with 'the milk of human kindness'. [=he was filled with kindness; he was very kind]
They 'milked' [='exploited'] their advantage for all it was worth.
greedy landlords 'milking' their tenants of all their money
(..) up here a few days ago. -ls that right? -Yes. -Your family? -Yeah, all fine. Thank you. -We have goat's milk, if you'd like. -That would be fine. Now, if we set our tent away over there, we'd be out of your way over there. That's fine. Ruth! Help these men and bring them some water. No! H.W. Mr. Plainview, would you like that milk now? -That would be fine. Thank you. -Mary! Bring them some milk. My family will help you set up your tent. No, please. We set ourselves on this camping trip. (..)2007 There Will Be Blood