<human>: Can you condense the text into three sentences or less?

To start, this was the worst day in my life.
It was a regular school day ( I'm 18) and we had gym class and because of that I always wear a cheap (white, ofcourse...) boxershort because I tend to have a sweaty ass. While I was doing gym class I didn't mind to scratch my butthole trough my boxers like it wasn't a big deal. Please note that that day was one of the hottest days this year and I was wearing some skinny black jeans before gym class, which was a bad choice so I was like who the heck cares if I'm walking around in my gym pants in school? (the gym pants is such a loose small, black basketball pants) So I walk around with my gym shorts and school is done so I had to go to my locker and then I could go home. And there I was, standing in a crowded place waiting to use my locker... A friend of mine saw me in my loose shorts and thought it would be funny to pull them down, so he sneaks up behind me and instantly pulling my shorts down making it reveal my white boxers with a skidmark on it. He laughed his ass of while I was shocked but thought it was funny at the same time, only to realise afterwards that I had a skidmark and that some people have seen it. It may not look like a big deal for you but for me this is the worst thing ever happend to me and I have no clue what to do. A friend came over and was like LOL you had a skidmark which I replied with "Sorry for being human" but this event really makes me feel like "that guy" from highschool now :-(
<bot>: Had gym class, didn't wear my normal pants but my gym shorts afterwards, friend pulls them down to have a laugh, in a crowded locker room, people notice skidmark.