ah, help please!

i don't have a lot to go off of here, but it's a hip-hop/rap song that i swear i only hear on friday and saturday nights. it may be a remix of some kind, but the only lyrics i can remember are 'go brooklyn, it's your birthday' and something about 'all my people with a twenty dollar bill, put your hands up', 'all my people with a fifty dollar bill, put your hands up.'

this is driving me nuts. your help is much appreciated!

It's "Go girlfriend, its your birthday"

the song is by fat man scoop & called be faithful.