1 definition by InvisibleConnections
Port-manteau of blunder and wonderful; a particularly egregious mistake, possibly of epic proportions. Usually the speaker is deeply affected by the fallout.
A: Oh, so I was just playing with your computer and, errr, I had to reinstall everything because I deleted your whole disk.
B: Blunderful!
B: Blunderful!
by InvisibleConnections October 29, 2006