I know that feeling. I once woke up and had a plugged left nostril. Stuck a pinky in it to explore and out came a giant, solidified blood slug about 4 inch long. Apparently I’d had a spontaneous nosebleed during the night.
When I was ~14 years old I woke up one morning with a splitting headache. It was so bad that I didn’t go to school that day. About two hours into my morning I got the sudden urge to blow my nose. What came out of my right nostril was an enormous booger roughly the size of my entire pinky, with small streaks of blood marking the outside. I’ll never forget the feeling of expelling that monstrosity, it was pure bliss. I hope it happens to me again one day