<human>: This actually didn't happen today, but about 1 month ago...

I was sitting at home on a Sunday evening talking in a chat app. I join an Anime group where almost everyone is casually talking about SAO until all of a sudden this Arabic man appears, posts a dick pic and then leaves. For some reason the picture opened in preview and i instantly clicked what i thought to be the red x/exit button . What i didn't know was that i actually clicked the orange -/minimize button allowing the picture to stay open. 

Here is where the fuck up happens... I arrive at school Monday morning, first period, open up my laptop and start playing a game in class. As the teacher walks by i press command + tab to hide it and return to my work. Instead of the essay i had been working on, the previous disgusting picture emerged for all to see. After almost my whole class AND the teacher saw what stood in-front of me, only then did close the lid, get up and walk out of class. I will never forget that horrific day.

What happened afterwards: Ended up talking to the principle and receiving a weeks detention after my explanation.

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Accidentally minimised a dick pick, ended up showing it to my entire class/teacher. I then walk out of class with embarrassment and an almost guaranteed talk with the head of our school.