i first got into this when me and the wife went to a shopping centre ,her trousers had split up the seam of her arse and everytime she bent over to look at something they came apart exposing her thong which was like cheese wire so her anus was easily seen aswell, it turned me on so much seeing other guys looking really close at her anus i decided not to let her know about it and carry on shopping for another hour or so, now i need more ideas how i can set up stuff like this to expose her without her knowing so please let me know if you have any ideas