The art of being dreadfully shitty and awesome at the same time. This state of being can be obtained only by spending extended periods of time with other doaches of the same gender. This adjective can be used in place of awesome, good, superb, etc.
Doach #1: "What's up, brah? You get any head last night from your girl?". Doach #2: "Yeah, man, it was fucking doachtastic!"
by The Noice Guy August 23, 2010