you were friends with Gwen you often hung out at her house or she would go to your house you sat behind Gwen in math class the math teacher Mr. Whistle, always made inappropriate comments to Gwen you hated it one day Mr. Whistle walked next to Gwen's desk, trying to make it discreet he turned his body so that he was facing her, he continued explaining the math question while inching closer and closer to Gwen

[ think of it as what Ian did about the teacher for Mandy in Shameless ]

you moved your bag with your foot to trip Mr. Peppin Mr. Whistle moved back a bit and he tripped and fell over the bag, landing on his back on the floor everyone burst into laughter you looked at Gwen and smiled and she smiled back