"Yeah, I do mind," he says when you double-check. "Go away."
"Can I show you something?"
"I'm on the toilet. I'm having a poo."
Without another word you start shoulder-barging the door.
"What the hell are you doing? You're going to break the door."
"I need to show you this!"
"Dad! Dad! You have to see this!"
"I'm having a shit. Go away."
You go back downstairs, print out the picture, and slide it under the toilet door.
"What the hell are you doing now?"
"Look at it."
"I am, and I don't care."
"No, I'm not opening the door just so you can show me another picture of an animal playing video games."
"Because I'm going to toilet, and it's stupid."
"Going to the toilet isn't stupid. It's natural."
"You know what I mean. Now piss off. I can't go while you're out there."
"Is there somebody in there? Dad?"
"I told you I was in here. I said I was going for a poo. You even acknowledged me."
"Don't tell me to calm down. I just want to be left alone to have a poo in peace."
"Can I show you a picture?"
"When I'm out."
"Can it wait? I'm on the loo."
"Why doesn't this rat have any hairs?"
"In this picture."
"Of the bald rat. It's really scaring me."
"...I'll look at it when I come out."
"Are you still outside?"
"Yes, dad. I'm too scared to go downstairs."
<TRIES TO SLIDE PHOTOGRAPH OF RAT UNDER DOOR>
"What's going on out there? I'm in here you know!"
<CONTINUES SLIDING PHOTOGRAPH>
"What is that? What are you doing?"
"Hello? What am I meant to do with this? Hello?"
"What... the?! What the hell are you doing? I'm having a shit. I've told you not to run on the extension roof! You'll go right through. Get lost. Sod off! I don't want to look at that right now."
"Jesus. You made me jump."
"Opinion needed on two naked molerats playing head-to-head."
"You heard me. C'mon! No time!"
"Dada... dada... I want to show you a rat."
"Why do you always wait until I'm in here before showing me things?"
You curl your fingers beneath the door, and waggle them at him.
"Get lost, you bloody weirdo!"
"Dad, what is it with rats and video games?"
"But what is it though?"
"You knew I was having a poo. Why do you wait until I come up here to ask me about animals and video games?"
"Can I show you the picture?"
"No! I don't want to see the bloody picture. I just want to go to toilet in peace for once. I've started going at work instead of at home, because every time I come up here, you start asking me things through the door, or climbing onto the extension roof. I'm starting to think there's something wrong with you. Seriously. I know your mum wonders it too. She said you spied on her in the chemist the other day."
<YOU KICK THE TOILET DOOR>
Sadly, the door topples inwards, giving your dad concussion, and you must wait until he wakes up to show him the picture.