When you consume so much coffee that your mood and energy becomes elevated and you feel like you can take on the world. A state often sought after by desperate college students cramming for a test/exam or trying to stay alert in class after a night of getting "real wasted".
"I have an exam at 8am today... I'm getting coffee wasted!"
Jill: "Jack, why are you acting so weird?"
Jack: "Sorry, brah, I must be gettin' coffee wasted!"