The Scope Creep Ambush
A VP drops an unbudgeted feature into a public standup and asks if you can fit it in.
"I think we can try to squeeze this in if the team works the weekend, but I'm a little worried about testing."
Two qualifiers and a free weekend given away. The VP hears yes.
"We can ship the export by Friday. That moves the billing refactor to next sprint. Let's confirm that trade now."
A clear boundary, a named trade-off, and a decision requested on the spot.