IM Grandpa, Real Grandpa or Dad?

While I was pondering what to wright about, I got an IM that said Grandpa on it. At that time I was for certain that was Grandpa. I told him about my blog and how he should check it out. But what spoiled Dads little plan was I heard a BLING from Dads computer. Any person who uses IM knows that means you just received a message. Dad lied it was from Mom. I wasn't convinced. But what also blow his cover was that he typed "you should really get out of that dark basement sometimes. And I KNEW only dad says that. So, if he was trying to trick me, he failed.