Step 1: Roll a joint. Nice and tight.
Step 2: Shove it into the top.
Step 3: Light it up (the top end of the joint)
Step 4: Well, you know how it works.
(too fat of a join may not work, and may have to relight half-way, but it does work)
Dude 2: Dude, just use The Rob Method...
...later in the week....
Dude 1: Dude!! It totally worked!