1 definition by joeink100

A British term for a rolled up cigarette either rolled thinly, without a filter or both.
It refers to the fact that prisoners roll like this to save tobbaco.
Person 1: can you roll us a fag mate
Person 2: yeah sure
Person 1: this is basically a prison fag
Person 2: yeah im running out of backy so that's all you will get
by joeink100 May 6, 2019
Get the Prison fag mug.