Kirven
Somebody who spends money unwisely and thinks anything is too easy. Usually just outright spends his or her money without thinking about it. Lives in the moment type of person.
A Kirven: I just bought shoes, computer, games, and I can't pay rent.
Me: Stop being a Kirven with your money.
Me: Stop being a Kirven with your money.
Get the Kirven mug.