Johnny And His Example

Grandpa and Little Johnny are sitting on a bench in the park.  Johnny asked,
"Grandpa are you going to take that new Viagra?"

Grandpa looks at him and says, "I don't know Johnny, Should I?"

"Well Grandpa",  says little Johnny."I don't think so."

"And why is that?" asks Grandpa.

Little Johnny replies, "Because there is no sense in putting lead in your
pencil if you have no one worth writing to."