What is the Meaning of the Expression… to SPEND LIKE THERE’S NO TOMORROW?

Definition:

spend a lot of money quickly and without much thought, or wisdom

Example:

I went into that big new sports store the week before Christmas.  It was crazy! People were spending like there’s no tomorrow.

Note:  This expression is often used with a continuous verb (i.e., am spending / is spending / are spending / was spending / were spending / has been spending / have been spending, etc.)

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