Infected operculum - pericoronitis. An infected flap of gums that falls across the molar. It hurts like hell. On antibiotics. I apologize for nothing. nudes
My son had a laparoscopic surgery when he was an infant. Every now and then, 10 years later, the tiny scar fills up and gets a black head. Got this cute little thing out of it just now! (No children were harmed during the squeezing)