spur-of-the-moment

"Before, you were much more likely to come in and buy something on the spur of the moment."

I just made up the word on the spur of the moment.

How could I answer the question on the spur of the moment?

I came up with the plan on the spur of the moment.

Both times he'd wanted to go out on the spur of the moment, when she'd already made plans to do something else.

I made them up just in the spur of the moment.

He heard everyone out, but never made a decision on the spur of the moment.

Well, perhaps he could, even though I had done so on the spur of the moment.

I've always been one to do something on the spur of the moment.

But the whole thing just happened, spur of the moment.