If you meant this literally (I don't need any more arcs over the head), the only area of this apartment that can be swept is the balcony. I live on the second floor, so when no one is looking, it gets swept over the edge.
I guess what I really meant is, if you use that expression, do you say "rug" or "carpet".
I say rug. To me, carpet is wall to wall and secured to the floor. I don't get how one would manage to sweep anything under it!
I won't tell, as long as you're just sweeping dust. ;)
I am not a fan of figuratively sweeping things under rugs. Stuff just grows bigger and starts to really stink under there when you do that. In my opinion, of course.