saving a rough draft
When you are in the middle of urinating, and decide you might have to take a shit soon, so you don't flush the toilet right away. Saving a rough draft can be out of a sincere desire to conserve water, or just out of sheer laziness.
Dude, why didn't you flush?
Oh, sorry about that. I was saving a rough draft.
Oh, sorry about that. I was saving a rough draft.