#go poof
disappear
- Even the best-laid plans of your life go poof in your face.
#best laid plan
when something ends poorly or differently than expected, despite preparations for success. It is an abbreviated version of the full proverb "the best-laid plans of mice and men oft go astray."
A: "I've been working on this project for six months, and now, right before it's due, they tell me they want something completely different."
B: "That's rough. The best-laid plans, I suppose."