Some 42% of survey respondents said that passengers grooming themselves on a flight is the most annoying thing they can do — and that includes painting or clipping their nails and trimming their facial hair.In February, a video posted on TikTok showed a male passenger wearing a dark shirt and pair of shorts clipping his nails. The passenger was then shown flicking the pieces of nails to the person sitting beside them, and needless to say, people online were outraged. Some users said they would confront the man, and that they felt disgusted by his behavior.