ffd stands for
fit from distance. It refers to when you see somebody that appears
fit when looked on from far away, but when they
get closer you realize that they aren't actually attractive.
John: Oh mate check out that chick across the street! She is well
fit! Oh look she's crossing the road..
James: Are you blind?! Her face looks like it's made out of leather!
John: My bad, but to be fair she was ffd