Rob

Personally, mine is the !. Nothing drives a point harder and deeper than the beloved Exclamation Mark! I even group them together to make them UBER Powerful!!!

A great example of its powerful use is as follows:
I'm going to kick your ass.
I'm going to kick your ass?
I'm going to kick your ass,
I'm going to kick your ass;

or

I'm going to kick your ass!
I'm going to kick your ass!!!

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