My wife busted me. Big time.
I've been secretly taking pictures of her when she gets ready for bed, or comes out of the shower etc for years. Have a fuck load of them.
Normally, I'll take them on my phone (whilst pretending to browse the net or something) then file them away in a secure password protected section of my phone before transferring to my laptop at some future point in time.
Anyway, one evening before bed, I'd been snapping away happily capturing her bare breasts and even bearer pussy

whilst laying on the bed.
Once in her nightgown, I switched my phone to twitter and she got in to bed. Browsed away, thinking no more of it and then lights out and bed time.
The next morning we were having breakfast and she wanted to see some holiday pics I had snapped the week previous. I plug my phone in to the laptop to bring them up and lo and behold, about 20 pics of her naked and unaware pop up that I had forgotten about.
Needless to say, my balls were in a vice for quite some time after that.