Pedullist said:
[lame joke]
I've tried.....how big are your balls? Because I'm having some serious trouble hitting them....
[/lame joke]
Taking into consideration the shortcomings of some of our members, I am offering an alternative solution to my previous strategy.
Turn your Marshall's gain and master volume to ten. Place an SM57 1.5 inches from the speaker grill of your choice. You may substitute any number of other tube or valve-state amplifiers, but a POD or any other cheap attempt to avoid having to mic an electric guitar amp simply will not work, as you will presently understand.
Next fill your tub up with water at a comfortable bathing temperature. It is also recommended that you place a microphone (pretty much any mic will do) outside the bathroom door.
And finally, and I mean finally, with your active track armed for recording, pick up your electric guitar, hit record, make the best heavy metal face you can afford, and run as fast as you can into the tub.
This is one of the surest ways I know of to achieve that evil tone you are looking for.
Though I have yet to try this one myself.