Birthday Nigga 

a "birthday nigga" is when its a fagget nigga's birthday

"whatup birthday nigga so wheres the cake im fucking starving

Birthday Nigga by Christian_Martinez April 27, 2023

it's my birthday NIGGA 

a loud proclamation said by someone when it is their birthday, usually highlighted by said someone forcing a door open with their foot

It was quiet in the house, when all of a sudden Steve busted the door open and yelled :

"it's my birthday NIGGA."

Everyone immediately gave Steve all their money from their respective wallets.

it's my birthday NIGGA by Galbert-Kun April 4, 2009