I've always liked the word "dude", as much as the word "bummer". When I taught UPT, my students told me that they were worried when I called them "dude" because it usually meant they failed the ride, and I wasn't even aware of that myself! Dude....

Check out this video on YouTube:

YouTube - Rob Schneider - Meanings of "Dude"

Or even better:

YouTube - Dude - Bud Light