Penn State defensive end Antonio Shelton tweeted a fan letter one of his teammates calling his dreadlocks disgusting.

 "Explain to me how this isn't racist," he tweeted out with the letter.

The letter reportedly comes from a fan who describes himself and his wife as "older" graduates of Penn State. The letter was addressed to "Jonathan," -presumably junior safety Jonathan Sutherland, who has long dreadlocks.

Part of the letter reads:

Watching the Idaho game on TV we couldn’t help but notice your — well — awful hair. Surely there must be mirrors in the locker room! Don’t you have parents or girlfriend who’ve told you those shoulder length dreadlocks look disgusting and are certainly not attractive. (sic)

We congratulate you on your game against Pitt but you need to remember you represent all Penn Staters both current and those alumni from years past. We would welcome the reappearance of dress codes for athletes.

You will certainly be playing ‘on Sunday’ in the future but we have stopped watching the NFL due to the disgusting tattoos, awful hair and immature antics in the end zone. Players should act as though they’ve ‘been there before.’ (sic)

As well as dreadlocks, the fan also has a particular distaste for tattoos and "immature antics."

He is calling for the NFL to reinstate their archaic dress code.