A believable wedgie story

The plan

Elizabeth was a pretty popular girl who was kind of spoilt. She had loads of friends, good grades and was 15 years old. She has a moderately big ass but small titties. Today was her first day back at school after a long holiday. She was looking forward to seeing everyone after they always seemed to be busy over the summer. On the first day of school she wore a purple/blue frilly crop top, a denim Jacket, grey sweatpants and Nike Hightops. She arrived slightly late as usual meaning she wouldn't really have chance to talk to her friends until 1st break. Her first lesson was maths as of which she sat near no one she really knew. She was extremely bored so started messing with the waistband of her black spotty black and white Abercrombie and Fitch underwear she got imported from the uk. At this point the bell signalling first break went off. She was excited at this as she would be able to speak to her mates irl instead of messaging them. She met up with them in the caffateria over a piece of toast as she was rushing this morning after taking too much time piking her outfit. Liz and her friends were talking when one of them mentioned how one of their parents weren't over so they should all come round for a sleepover. The all agreed it would be a good idea but decided that before they go to her house that they should meet at their hang out spot near the river in the Forrest with the fence backing on to a tennis court. The bell went to end break and liz was now looking forward to her weekend as things usually get fun at the sleepovers. The next two lessons on the Monday were chemistry and English where again the teachers seemed to remember how talkative she was last year and seat her by her self. Again she got bored so she put her hands in her sweatpants pockets secretly messing with her underwear as it was new and not sitting properly on her body yet. The next week passed her by quickly as she was so excited for the sleepover.