This may not be a spur-of-the-moment decision.
However, if you don't want to break the bank taking a spur of the moment flight, then compromise is key.
I did it on the spur of the moment.
I guess that shows they at least believed what they were doing was right—not just whacking you on the spur of the moment because they were mad as hell, taking their anger out on your backside.
On the spur of the moment you pick up the suitcases, put them in your trunk, and drive off.