The definition of a beef cooker is basically any person who is capable of ripping a nice fart. If you're having a big day, you can refer to yourself as the beef cooker. This is a high honor and many strive to be labeled as a Beef cooker.
Person: "Those tacos last night have me really cooking up some nice beef this morning."
Friend: "Wow, you're the beef cooker today."
Slang for a little hamburger, like the ones served at White Castle or Kristals, because of their size. junk food fast food puke food hamburgerslider
Bert, "I'm really hungry, but you know I don't cook."
Ernie, "Wouldn't do you any good if you could; there's no food in the house."
Bert, "Let's go to White Castle for a beefcookie. That would taste yummy."
Ernie, "Good idea, except neither one of us has a car."