Remember Aaron Hernandez?

The former Patriots tight end is currently serving a life sentence for murder in case you had forgotten.

In a new prison letter obtained by TMZ Sports, old No. 81 rips Patriots owner Robert Kraft, praises Tom Brady, and offers some not-so-savory advice to his female pen-pal on how to best kill herself.

“Tie a cinderblock to your ankles and jump in a deep body of water,” Hernandez writes in an eloquent three-page handwritten note to “Rachel” who must have had some harsh words for the murderer in a letter sent to him at the Souza-Baranowski Correctional Center in Lancaster.

Hemingway Hernandez goes on to advise Rachel to “Buy the most powerful firecracker in the world that’s possible to buy, tie it to your face with duct tape, light it and wait for your head to explode.”

Hernandez proclaims his neverending love for Tom Brady and let’s us know he’s cool with Julian Edelman, Dion Branch, and Gronk. And he let’s Rachel know that he’s still able to catch Patriots games on television, too.

But Hernandez shows no love for Kraft, whose testimony hurt the former Patriots receive in his first murder trial writing that “fake ass non loyal Kraft who told me he loved me every time he seen me but obviously shows his word ain’t sh*t.”

After Hernandez had been charged with murder in 2013, Kraft told reporters that “our whole organization has been duped” by the tight end turned criminal.

Hernandez signs off on his love letter to Rachel with an important message: “[Expletive] THE WORLD!”

I smell a Pulitzer.

Aaron Hernandez