A woman has revealed how she put a stop to her teacher's creepy habit of pressing his crotch against students' desks by using chalk.
Twitter user @JodiesJumpsuit took to social media to share her crafty trick which she performed back in high school.
The Toronto-based writer revealed that one of her male teachers would periodically press his crotch against the desks of his female students.
She tweeted: "So when I was in high school long ago there was this one male teacher who would walk around the class and rest his junk, through his pants, on the edge of your desk, if you were a girl."
Continuing the story she writes: "He wore a uniform of khakis and unbuttoned polo shirts with his greying chest hair puffing through the front and he'd always be playing with chalk.
"He didn't particularly like our class, the one just before lunch, and we didn't particularly like him. The junk resting only aggravated it."