Really, really old. Beta is the test phase before a product release to the general public. "Older than dirt" refers to someone or something really ancient - but dirt-beta is even older.
"Man, those clothes are so out of style they're dirt-beta."
"Dude, your grandpa is so old, he did QA on the dirt-beta."
"Dude, your grandpa is so old, he did QA on the dirt-beta."
by Captain Frank April 24, 2008

by Yerdy June 6, 2018

by A shekinah serene ramey dirt w January 14, 2022

Refers to eating uncontrollably.
by PerfectTouch December 26, 2007

Rural Arkansas slang stinging sensation felt on exposed skin one experiences caused by dirt and sand blown about by tornadoes,thunderstorms,dust devils and high winds.
by pudinat wudinat August 12, 2012

by J.Z.. April 30, 2008
