Growing up in inner-city
Seattle, teenage guys would sometimes use the word "weak" to refer to an
action, word, or
behavior towards them by another guy that was coming across as selfish, exploiting, dishonest, or friendship betrayal.
Bob and Bill are good friends and classmates in school. When
Bob went to Bill's place a few days ago, Bill offered
Bob a couple of beers. But when Bill went to Bob's place yesterday, Bob offered Bill only one beer.
Bill: "Only one beer? That's really weak. When you came over, I gave you two."