You will get a dermoid cyst

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Is this the most terrible medical affliction ever?

From Wikipedia:

A dermoid cyst is a cystic teratoma that contains developmentally mature skin complete with hair follicles and sweat glands, sometimes clumps of long hair, and often pockets of sebum, blood, fat, bone, nails, teeth, eyes, cartilage, and thyroid tissue.

Any teratoma near the body surface may develop a sinus or a fistula, or even a cluster of these. Such is the case of Canadian Football League linebacker Tyrone Jones, whose teratoma was discovered when he blew a tooth out of his nose.

Here are some pictures:

I'll put them in here because some are large, and all are disgusting:

And those are the ones that grossed me out the least.