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[ReamusLQ]

Basically you're telling a story one sentence at a time, but you alternate "the good thing is" and "the bad thing is" every other sentence.
Example:

Me: One day, you were walking through the park
Next person: The good thing is it was sunny.
Next person: The bad thing is that you tripped on a rock and fell.
NP: The good thing is you landed on a pillow.
NP: The bad thing is the pillow was full of bees.
NP: The good thing is you escaped the swarm of bees by jumpin in a pond.
NP: The bad thing is you can't swim.
and so on ...

So here goes:

One night, you were driving down the street.