"Paying it backward" is going to be the opposite of "paying it forward" so that means it has to be a negative action. With that in mind, the only way to truly "pay it backward" is to fart on the top of a very long and crowded escalator. By farting in the face of the person standing under your ass you initiate the possibility for something amazing. If the person who gets your gas decides to take that offering and do the only thing they can do with it and repeat it, and the person behind them does the same, and so on all the way down the line then that's the true definition of "paying it backward".
|You know it was strong when they have to re-build the whole damn escalator.|