The Wondertwins have become obsessed with climbing onto things... mainly the couch. If you are sitting on it they immediately run over saying, "Uh, uh, uh, uh" (up, up, up, up). If you help them up they squeal and clap. Dh and I remind them, repeatedly, "No standing... sit down". But, inevitably they can't do just that. They have to stand... the must try to jump.
So, back on the floor they go. Most often, this is followed by screams and throwing a big fit. Eventually, they calm down... to be repeated again.
"Uh, uh, uh, uh!"