Well kids, today we gonna play a bit with gunpowder.
And I grantee this will ether work very well or blow someones face off. So lets start shall we?
First you need some stuff.
Tobacco (hard to guess, eh?)
Cigarette paper (the kind you roll with when you.. pff you got the point.)
Well I think what I have in my mind atm is quite easy to guess right?
Make a nice smoke, have some gunpower about... well lets say 7mm ~ 1 cm inside the smoke from the side which will be best to light it up from. The best would eb to light it up yourself, and give it to the friend. But make sure the gunpower is far enough in that it dont say BOOM right ahead right?
This have been tested by me and many other millions of times but it works.
You can also use firecrackers (in one piece) inside the cigarette, but its easier to detect.
Dont get hurt kids, I wont take the responsibility.