yass-lighting

A combination of "Yass"/"Yass Queen" and gaslighting.
Convincing a person into believing something through hyping them up and/or positive public support.

Person 1"2 + 2 = 5"
Person 2"Yass, you're so right. I didn't realise. You're really intelligent. Listen everyone, this person really knows their stuff. You should listen to them ."
Person 3"Hey, quit yass-lighting them."