I don't care if you can somehow make out the word "sex"
hidden in the ice cubes on a vodka ad,
I like the ones where inanimate objects (hot dog, cigeratte, doughnut, lipstick, etc.) are doing their sneaky best to make it seem that actual lovemaking going on (not that I'm opposed to tossing in the in your face blatantly sexy advertisements too).
Giant "hidden" penises are also a comedy plus.
Keep checking in- I'm sure there will be many more examples added asap!