Top definition
The value of sandwich bread, irrespective of what is in the actual sandwich. One may buy a sandwich for the bread alone and dispose of what's inside.
Tyrell: Dude, why would u buy hot dog and throw it out a second later?? Why the hell would u save the bun?!

Mo: I only bought it for the bun value, Im gonna use the bun to eat my chicken
by itaub1 February 16, 2010
Get the mug
Get a Bun Value mug for your Facebook friend Paul.