Get Your Own Towel

Life never stops revealing to me the idiocy of its inhabitants. All to my enlightenment of unaltered reason. Are you ready...here it comes...my gripe of the week...."GET YOUR OWN DAMN TOWEL!!!" My sister use to pull this crap on me, and I thought it was just her, but after living a few years, and an instance just the other day on TV, It occured to me. Why do people, after spilling a drink or substance, or anything that needs to be wiped up with a towel, always tell the person that had nothing to do with it being knocked over to get THEM a towel. Is it necessary to have one person stand there all shocked, starring it into the carpet even more? Is this person afraid that if THEY move, the drink will become even more embedded? I'm going to ask a scientist that whenever I know a scientist...."Um Doc???....What are the physics behind a spill and the conditioned response of shouting "GET ME A TOWEL!"