Good Idea: Staying hydrated.
Bad Idea: Holding a cup full of ice water, whilst leaning over to pick something up.
Good Idea: Showering regularly.
Bad Idea: Showering while all of your towels are drying in the dryer.
Good Idea: Removing a dead scorpion from the church building.
Bad Idea: Not watching where you're walking while taking care of said scorpion and exposing your bare toes to an alive scorpion. (My friend saved me with her screaming)
Good Idea: Quickly going to the bathroom at work so that coworkers don't have to wait in line for too long.
Bad Idea: Going to the bathroom so quickly at work that your coworkers can see your fly down.
And now for a stroll down memory lane. Here's a clip from the Animaniacs, who first introduced me to good idea, bad idea: