Based on the context and the answer, generate a question. 

Context: I went to the ATM yesterday before work to take out about $ 25 to cover my lunch and margarita expenses later that night . I was a bit distracted ( OK , a lot distracted ) , and instead of hitting the " other amount " button , I hit the one marked " $ 200 " . Instant life savings in the wallet . Luckily my phone payment had already cleared or I would have been screwed .

Answer:

They were speaking in an illustrative manner to describe the surplus amount of cash



Why did the speaker refer to this amount of money in their wallet as instant life savings ?