A bad day fishing is when the dynamite's fuse burns a lot faster than you expected, or you drop the grenade in the boat after pulling the pin, and it rolls under something! THAT'S a bad day fishing!
Getting a hook of any kind, but especially a treble, stuck in any part of your anatomy qualifies as a bad day fishing, too!
So does letting your boat get too close to the falls!
Worst of all is calling in sick to go fishing and you find your BOSS fishing out on the lake, too!
CJ