I was on a flight from Europe to North America many years ago and this man decided to take his shoes off which was OK because he was seated behind me. But then he went to the bathroom with no shoes on and on his return decided to stick his feet in the space between seats beside my arm. Gross! So I am stuck on this long flight with dirty, disgusting and stinky bare feet beside me with nowhere to go! People please keep your feet on the ground and keep your shoes on!