Quote Originally Posted by crf250smoker
the darker one is the accctual wrap, and the lighter one is whats known as the cancer paper, or as the leaf, i persoinally roll up the dark one first, nice and loose, then use the leaf to tighten it up to perfection, spark, enjoy
The leaf and the cancer paper are two seperate things, the cancer paper can be found in the mouth piece of certain brands of blunts, e.g. Phillies

I usually just lick the edges of the split blunt and roll both the wrap and leaves at the same time.