Vibe Check

The process of reacting to the mood or energy someone is bringing to a situation or conversation.
This may involve high-fiving good vibes, smacking someone bringing bad vibes, or telling someone to chill out if they're harshing the vibe or ruining the mood.

-Hey, where did Jessie go?
-Oh, I gave her a Vibe Check; she's getting some food. She was really hangry and it was harshing my chill.
-Oh, sweet, I hope she brings some for me too.

shut-the-fuck-upsmanship

Knowing when to stay quiet and when to speak up; tact.

"You should practice some shut-the-fuck-upsmanship before your mouth writes checks your ass can't cash"