Trickle down government...wha??

I'm still scratching my head over this. So...is trickle down nonsense now? Or is it affirmed as solid doctrine, but bad if it involves government? Is it an argument that government should inure to the benefit of the top, whose contributions to society will have the effect of trickling government largesse down to the 47%? Or is it to say that government programs aimed at the top are no good because they will (or will not?) trickle down? I'm stumped.