Top Definition
A phrase that is another way of saying awesome, rad, cool, sweet, tight, etc. You do not use it in the middle of a sentence.

example of how NOT to use it: I have a that go hard mp3 player.
How to use it:

speaker 1. "Man, Yesterday i got this sweet bass system for my car."

speaker 2."Oh that go hard."
by kip April 16, 2005
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