I was walking to my seat and saw a huge blob of grease standing in the isle. I was like 'please dont be my seat'....'please dont be my seat'......'fuck'.  My seat was the window next to the greasy ham. Now this one was huge....like 1 and a half seat huge. So it reached in and said 'let me get that for you'. What it was getting was the arm rest that it put up. I thought on fuck no it wants to ooze on me for space for its genetics. I got in my seat and quickly put the arm rest down and my arm on it, head phones on quickly and hoped for the best. The look on its face when the arm rest was put down was one of confusion and 'oh shit'. it looked at me and I looked away. So it tried to wedge into the seat but couldn't. Needed TWO fucking seat belt extenders. Oozed over the arm rest and under it. I could feel the moist heat from it and it was gross. I moved over to the bulkhead as much as possible. Thank god for that arm rest. Fuck them fat slobs that think they have a right to molest me with their rolls.  Worst flight ever.......but I did get to see a whale feeding when the snack cart came around. No room for the tray, lets just use the overhang of the gut like a table.....Worst flight ever... there were no empty seats or I would have moved.