InstaGrat

1.) A "brat" persona (possibly involving instant celebrity) social media personality often with a mostly inflated, self-perceived meteoric rise to fame and social influence; 2.) The instant regret / hangover one feels at closely aligning with such a person as defined in the first definition herewith; and/or the "hashtag regret" one feels following a particularly humiliating and/or regrettable social media gaffe / online faux pas / aka regretti spaghetti scenario, situation, condition and/or set of conditions; 3) "Instant gratification" shorthand that usually leads to shame and/or regret later, though possibly could simply be that what is full of such speedy gratification without those complicated feelings (context and time may tell)