situation: When I was a teenager I used to borrow my big sisters clothes when she was out.  Then i would put them back before she came home and she would never know.  This one time she had bought a new dress.  She had saved all her wages for this dress.  That weekend I borrowed it and of course ripped it on a nail.  The next day when she found out she was so angry.  I felt terrible, so guilty.  Needless to say I never did borrow her clothes again!