Construction worker type in the window seat (I was the aisle) who laid out his damp boot socks side by side on the seat back in front of him (no one was in the seat).
Most disgusting someone once mentioned in a thread long ago is the exploding airsickness bag that was left in the seat back pocket from the previous flight.
Not so disgusting to me was the young lady in the mini that had trouble putting her suitcase in the overhead on an AA flight RDU to DFW. Seems she forgot to wear any underthings. I verified this was true by staying seated to watch her struggle to get the suitcase out when we landed!
outoftown