Observing someone from a distance that is initially attractive. As that person approaches closer, (and a better physical view or personality perspective is available) the initial attractiveness dissipates.
Person #1 - " Hey, did you see the woman over by the checkout line?
Person #2 - (after walking over for a closer look and returning) "Yeah, she's CFAD"
Person #1 - (a woman who has been validated as attractive) "Man, she is hot".
Person #2 - "Dude, per personality is CFAD"...