On a Roll

The toilet wouldn't stop running -- just a slow flow into the bowl no matter how many times I shook the handle. I mentioned this to dh, who took the top off the tank and discovered that a roll of toilet paper had been dropped inside.
WHY do they do the things they do?! And do you know how much effort that had to have taken a toddler?
Toddlers are weird.
(Please don't tell me "because it would be funny . . ."