Hair Booger
When your dandruff turns into a gooey mess because you sweat like a maniac and then you get stuck with a hair booger that smells like a wet dog in a trash can.
My hair booger was so bad, my mom said I should go to sleep with my hat on.
My hair booger was so gross, my friend took a picture and posted it on TikTok.
My hair booger smelled so bad, the whole class started laughing at me.