I thought you may have meant an old thread we had once somewhere in space where someone posted a piece about the mousetrap (I thought it might have been goofy or jingle, but my memory is bad these days) and the sequence of events that followed which involved everyone in the household, animals included. It had a bit of a weird twist to it which I didn't really like, but the moral of the story was basically that lives are entwined in some way and that what one person does can affect the next.

I prefer the one Curious mentioned the other day about 'paying it forward'.