you are fastened between 10ft and 25 ft away.  spreader bar on your
ankles holding your feet apart.  Your wrists are fastend to the floor.
You are wearing cotton panties.  There is a candle on the floor between
your legs.  A small dab of alcohol/lighter fluid is applied to the seat.

When you are ready, you bend your knees to squat down and light your
panties with the candle.  When you straighten back up with your panties on
fire, I use the paintball gun to shoot at your bottom to put out the fire.

An alternate would be you facing me wearing a cotton bra.  The candle
is on a table or stand infront of you.  You wear a protective face mask
and gorget to protect your neck.  Again a very small dab of alcohol or
lighter fluid is applied to the bra cups.  When you are ready, you bend
forward to light your bra with the candle.  Again, I use the paintball
gun to shoot out the fire.