whats the song that goes duh duh duh duh duh duh duh duh duh duh and has rap in the background and is sung by?

its kinda like techno and goes duh duh duh duh duhhhhh. duh duh duh
duh (higher note) duhhhhhh. its in a commercial for free/pirated
movies. i really wanna know what song it is. sorry if you find this
question annoying.