Optical Iboobsion
When you see a bitty on a semi-consistent basis and you don't think her rack is up to snuff then BAM! bikini pics upload to the fb and you realize she has some cannons.
Friend 1: Her boobs are not that nice.
Friend 2: They are too. It is an optical iboobsion
Friend 2: They are too. It is an optical iboobsion