face drunk
You post something crazy on social media while drunk and it's usually something you'd never say when you're sober.
He texted his ex, "You're the worst and I hate you and I'll never stop hating you." while drunk.
She posted, "I'm getting a divorce and I'm getting a tattoo of my ex's face." while drunk.
He tweeted, "I'm getting a second job so I can buy more alcohol." in the middle of the night.