A fork of Rural Dictionary
Birthday Shit: The feeling of not feeling at all important the day after your birthday which was filled with Happy Birthdays and other nice greetings.
Dude 1: Yo Dude 2, what's wrong with Dude 3? He's been pompous all day and now he's gloomy as fuck!
Dude 2: Oh Dude 3? He's Experiencing the Birthday Shit.