How to give myself a nosebleed without sticking a pencil up my nose?

i just started college and i’m being forced to retake a class i already took in high school on dual credit, and i need a way to skip out on some of the class. any ideas how to start a nosebleed without messing my brain up?

(FOR CLARIFICATION ITS A CLASS THATS REQUIRED FOR MY MAJOR AND I PAID ~375 IN HIGHSCHOOL FOR THEM NOT TO TAKE THE CREDIT {i passed with a 93} SO I KNOW ALL THE MATERIAL AND I DONT WANNA WASTE TIME ON MY ONLY FRIDAY CLASS)