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
(..) No. No. We'll find another picture that we can use and that'll be fine. Yeah. Let's talk about your likes and dislikes. - How about your favorite food. What would that be? - Oh, milk steak. Hmm? Hmm? What? - Milk steak. - I'm not putting milk steak. Just put steak. Just put regular steak. And then- I'm gonna put steak. Put milk steak. She'll know what it is. She won't know. Nobody knows what that is. She'll know what it is. No- Okay, all right. What's your favorite hobby? (..)2009 TvShow: It's Always Sunny in Philadelphia Title: The Waitress Is Getting Married Season: 5 Episode 5