I'm thinking the healed piercing thing is what it is. Basically he has something akin to a fistula (https://en.wikipedia.org/wiki/Fistula https://en.wikipedia.o

I'm thinking the healed piercing thing is what it is. Basically he has something akin to a fistula (https://en.wikipedia.org/wiki/Fistula https://en.wikipedia.org/wiki/Fistula) from repeatedly poking the same spot, but the outside heals over so you can't see the hole.