The traditional 5 dollar bag of weed.
Usually low grade 'mersh'.
Yeilded about 3 to 5 skinny joints.
A good nicklebag was not only decent smoke but would yeild as many as 5 somewhat fat joints or 7 or 8 skinny ones.
A Nicklength is a scientific measuring unit, much like a Plancklength. It measures about six inches on a good day. The measurement is derived from the length of an average penis.
"Dude, how tall do you think that guy is? He's huge!"
"He is. He's gotta be at least 14 Nicklengths tall"