An Addiction

Connie told her 4-year-old grandson, Dean, not to jump on the beds. After several warnings she punished him, explaining that should he fall, he would hurt himself badly. 

Several minutes passed... and he was back to jumping on the beds. Connie said, "Dean, you weren't jumping on the beds again, were you?" 

He stood with his little head dropped low and said, "I'm trying, but it's so hard to quit."