Time For a Sex Class...

[Wallfire]

It compares what you do with a cigarette to how homosexuals have oral sex. 
You take it in your hand , put it to your mouth, suck, pull it out and do it again.
Hope this helps
This is the truth, the whole truth, at least I think it is 

...And the box of matches? I've heard you've got to use a box of matches at some point!

I shall not tell you about that but let you find out by experiment