A booger that is trapped in one’s nose, usually stuck to the wall of the nostril, which flaps back and forth like a hinged trap door when breathing. The trap door should be removed with caution; if snorted too vigorously when trying to loosen, it may suddenly release, resulting in being sucked down into the back of your throat, Which may induce nausea or vomiting.
by Steve Brown (Nu) April 1, 2022