This is how you can modify a normal cheap lighter to shoot the flame out, instead of just boring normal levels of flame.
I don't smoke, but I have lighters around for fun, and lots of my friends smoke. These lighters are fun for pranks, lighting campfires, or lighting hookah coals or pipe bowls more evenly, like an extremely ghetto bowl torch. Also, you can light plain old cigarettes with them too, just watch your long hair if you have it.
Step 1: Materials/tools
All you need is a lighter and a pointy slightly stiff object.
The lighter has to have an easily removable cage (the metal part the flame comes out of) and a flame-adjustment lever.
They might cost $1.25 US, at the most, If you are too young to buy lighters where you live, then get one through other means, be resourceful.
You can modify lighters different than this to shoot flame, but it is more difficult. See the "Theory" step at the end.
Step 2: Pop Off the Cage
The lighter cage is usually pretty easy to bend open a bit, then pull off straight up. However you can get it off without losing the ability to reattach it is a valid method.
Step 3: Wrenching It
The flame adjustment mechanism is a bit like a little wrench on a nut. Look at the lighter as shown in the pictures. Turn the little wrench to the right as far as it will go.
Now, you should be able to almost detach the wrench from the nut by lifting up on the wrench handle. you want it to look like the third picture.
Once the wrench is free of the nut, turn the wrench back to the left, and re-seat it on the nut.
Turn the wrench all the way to the right again. If you want, you can detach the wrench and turn the nut one more time for extra flame, but that approaches dangerous levels. Of fun.
Step 4: Reattach the Cage
Reattach the cage. It should just pop on.
Step 5: Test!
Flick yo Bic.
Should work, but with a much bigger flame. You might need a few tries to get it to light, depending on how many times you turned the nut.
Step 6: Safety (groan)
Use fire safety, blah blah blah.
When turning the nut, be very careful. If you loosen the nut too much, all the gas might leak, or the lighter might not turn off when you release the button. Unscrewing it all the way will blast gas all over the place.
Don't leave the lighter lit for too long, the extra heat will damage the lighter over long periods of time.
Step 7: Theory
Here's the basics of why this works: The nut you turned is a valve. It sits in the top of the gas reservoir on the lighter. You might have noticed that on top of the nut is a little metal barb. That barb is lifted when you press the lighter button. Lifting the barb releases the gas. Therefore, unscrewing the nut that the valve is in leaves more space at the base of the valve for gas to build up in. More gas= more fire.
Based on this system, any lighter with this kind of valve will produce more flame if the nut is loosened. Go wild.