Due to the minimal ammount of tobacco the guards hand out in prison, prisoners will roll a rizla with hardly any tobacco in it. Which ends up unbeleivably thin and is basically smoking rolling paper.
You dont have to be in prison to do a prison roll, it is usually an insult to someone who rolls a spliff with hardly any cannabis in.
1. Damn guard gave me minimal baccy, gonna have to do a prison roll.
2. Ha ha your rolls are weak like prison rolls.