A dirty Kerstin is when a girl from school goes into the boys bathroom, laying on the floor and screams for help from the janitor. As he comes in she grabs his dick and YELPS!
That girl gave my man Dave a good ol Dirty Kerstin to the point he died.
When you fail at something in life (eg. failing an exam or not getting a job), go home and spend an hour just standing in the shower, propping yourself up against the wall with your eyes on your feet.
Caleb knew the only thing to do after he didnt get prefect was take a failureshower.