Dude, that's gross. The grossest thing I ever saw was the guy across the row from me kept bringing up his hand to his nose and making blowing noises and then wiping his hand on his pants. I thought they must be dry blows. Nope. When the lights came back on, his pants leg was just covered in snot. Normally, I jump out of the seat the second the fasten seatbelt light goes off after landing. This time, I hung out in my seat and leaned the other way. No way did I want him bumping into me. Do these people grow up in barns?