Waiting in the living room

"Jacob, I want to show something to you!".
"Uh... Sure, but ca-aaan this wait for a few minutes?" Jacob groaned. "Uhm, I'll be waiting for you in the living room then!" David said and went his mary way.

Half an hour later Jacob came down into the living room.

"So, what did you wanted to show me, Dad?" Jacob started but then immediately stopped in his tracks when he...