I got one like that a couple of months ago. I don't get pix for work-related reasons, so when a new one showed up during the workday, I ignored it thinking I'd look at it later. Then about 15 minutes later my cell phone rings for a voice call. I give my cell number out to VERY few people, and most of the time calls I get during the workday from unknown numbers will involve my children, so I answered.
The caller wanted to know how "Leslie" had enjoyed the photo.
Me: "Sorry, I'm not Leslie, and I have no idea who you are."
Caller: "OH, [S-WORD]! Did you open the photo?"
Me: "No, I haven't."
Caller: "Would you please, PLEASE delete it without looking at it?"
Me: "Maybe." <click>
Tee-hee. Serves him right.