You meet people from all walks of life in airports. They're enormous melting pots, where people who would never normally come into contact with each other are forced to spend awkward time in each other's company.
Whoever this person is, they obviously really love the character of Forrest Gump, as played by Tom Hanks. They've gone to great lengths to get the look right, all the way down to the socks. Understandably, everyone appears to be giving him a wide berth.