I just wanted to buy...

I went to the department store with my mom.
I wanted to buy a new winter coat and thought mom was willing to buy a coat for me...
We looked round and looked to search what is best. Finally, I found just one I want to get. It was quite expensive. I didn't care that. I knew she would pay instead of me. But...she.. didn't...
I paid the coat price.. I became quite penniless..!! OH MY GAD!