Party facade
A party facade is what some guys/girls wear to a party to convert themselves from introverts to extroverts to other people at the party. Usually people wearing a party facade are thought by some to be quirky, feisty, or something similar since its what they consider their alter ego, everything they think is a good quality they try to show others at a party. The qualities considered most likeable would show at parties or public events, and never when no cameras are rolling, or fun parties or gatherings going on.
Yea, you think he/she is fun to take to a party, but have you ever felt like you could really trust him/her with your life at all times? What good will the party facade do you when instead of them needing you to do something else for them, and everything being about them, you actually need something or someone dependable or reliable from someone else?