Nothing better than a photo of a woman covering her boobs but forgetting to cover her vulva. Easily one of the best perverted situations you can find yourself in. She walks away hoping you didn't see her boobs failing to realise you hit the jackpot of seeing her crotch.
Happened to me with my sis-in-law. walked out of the bathroom unaware that I had arrived. Covered her tits when it was too late, then realised she was giving me a great sight of her genitals. she covered but, again, too late! Lovely pussy btw!