Often the cheapest burgers available at a supermarket, budget burgers are usually marketed under the store's own brand product range. The taste can vary, and is dependant upon a number of variables including cooking skill, brand, and moon phase.
Examples include:
Tesco Value economy burgers
Asda Smart Price Economy beef burgers
<guest> dude, what are these made of?
<host> They're budget burgers, man, I'm broke till my giro comes through.
When your girl says she's pregnant so you grab the nearest lamp
"Yo I heard Becky was pregnant!"
"Nah, I gave that bitch a Budget Abortion."
Cheapest hooker in the area!
"What you scratching your cock for?"
"I think I caught something from that budget cunt on 10th street!"