Roughnice
It is much like the word bittersweet in that it is something that is both rough(bad) and nice(good) at the same time.  it originated based on events in college such as hooking up with a very ugly girl or taking too big of a hit off of the bong and then coughing uncontrollably. 
"Dude, i hooked up with Ariel last night..."
-"fuck.. roughnice."

"Last night i took twenty-two shots last night and woke up in my vomit on the side walk, but from what i remember it was the best night of my life."
-"Roughnice."

Or even: A suicide kill on Super Smash Brothers.
-Roughnice!

