history: Well last summer while I was staying with a friend I went to the store to get some food.  I got the wrong change back and kept the extra $20 cause I didn't have a job yet. Last summer I stayed with a friend as I was nearly broke.  I went the store to get food and got back $20 extra in change from the cashier and ended up keeping the money. Oh wow_comma_ so it was extra money that was not yours? Yeah so her drawer was short. I realized it later not while she gave me the change so that helped me justify keeping it.
current: I hope she didn't get in trouble for being short $20. 
next: Yeah I thought about that. She was still working there weeks later so I was happy she wasn't fired.