explanation in response to why you've taken something that doesn't belong to you
store surveillance officer: excuse me miss, i was watching you from over here and saw you cut the price tag off that backpack you are carrying. i'm afraid you'll have to come with me for questioning regarding this theft.
stacy: what?? no way man! i borrowed this purse from a friend. it's totally on lohan. back off! don't make me call my mother.