...Woke up this morning to my oldest yelling "Dad! Mitchell threw a whole roll of toilet paper in the toilet!!" 
Guess my 3 year old hasn't heard about the shortage... Time to lock up the spare rolls? 
set it aside...it'll dry out eventually (as long as he didn't pee on it) my kids (decades ago) threw a clear toothbrush down the toilet & flushed...took me 3 pull offs of the toilet to find out what the problem was .