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.
user
Oh wow, so it was extra money that was not yours?
assistant
Yeah so her drawer was short. I realized it later not while she gave me the change so that helped me justify keeping it.
user
I hope she didn't get in trouble for being short $20. 
assistant
Yeah I thought about that. She was still working there weeks later so I was happy she wasn't fired.
user