This is a topic on how to do this simple fire trick with just a lighter.. and well.. a hand.
Step 1) Cup your hand so the only escape is the top part of the hand
Step 2) Put your lighter into the hole on top of your hand and press the button where gas escapes
Step 3) Wait 7-10 seconds or so (the longer the bigger the fire) and light the lighter
Step 4) Open your hands. Bam! A mini fireball you can make anywhere with just a lighter!
Here is a video of this trick:
YouTube - hand fireball
The fire doesn't hurt but please still do this at your own risk.
PS- If you could do this with two hands and a friend lighting your hand or vice-versa, it would be even bigger.. I tried doing it with a friend and the results were huge! Experiment different ways of doing this

Have fun and be safe!
You could also do this by putting the lighter into your mouth, but I advise not to do this! LOL