While not strictly limited to work, certainly the most common occurrence of a Pants Down Explanation occurs in the work place.
EOMPLOYEE: "Because a 600 of the largest buyers of our products will be in attendance. We've pre-marketed to all of them and have face-to-face pitch meetings pre-arranged with 40. By closing an average size deal at our average selling price with just 2 of them, we will have return on our investment in excess of 500%."
Now that's a Pants Down Explanation.
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