Top Definition
a new religion.

the belief that one will not belive in any "god" or "higher being" until they are showed one or shown proof that one exists.
jesse and dez.
you are sitting in your bed and you say "god if you are real turn my lights off."

if the lights turn off, you are no longer a praiser of "showmeism"
by dezandjesse April 09, 2008
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