A Guy goes to sharpen His pencil,The Guys Brother A Smoker and uses the sharpener as a ashtray,It has Flammible Cleaning Fluids to well clean it.When He sticks the the pencil in A spark Ignites the remainder of the fluid and Sends the Pencil into The Skull

wow that does sound lik it would work this should deffinetly be tested on the show

I'd think that if you somehow managed to get ignition, you'd be more likely to get a fire, rather than an explosion.
If you did get an explosion, most of the pencil sharpeners I've seen would probably just fly apart. (Nasty shrapnel, but probably not life-threatening.)
Regardless, interesting to see tested.
(BTW: Why use a pencil sharpener for an ashtray?)