be down with
Verb
Meaning
be down with (third-person singular simple present is down with, present participle being down with, simple past was down with, past participle been down with)
(idiomatic, slang or African-American Vernacular) To be alright, okay, or in agreement with; approve of; stand for; accept as good, right, or preferred.
I am not down with you children bullying and disrespecting one another, so cut it out!
She can come into the VIP lounge, it's alright, because she's down with us.
Examples
Injuries is a part of a sportsmen life; you have to live with it. You can't be down with that; it is not gonna help you.