Sorry to laugh, but that's hilarious! "Honey, look what YOUR cat did! You know, there's this really nice bag down at the shop that I've been wanting to get anyway..." Don't feel too bad. Years ago I had a dog that knew she wasn't allowed to poo in the house. She decided to do it anyway and hide the evidence. She nosed open the case to my bass guitar, crapped in it, and nosed it closed again. Took me forever to find the source of the odor and by the time I did, the case was ruined.