This is a disgusting habit performed by all sorts of plebs and low lifes.This habit can lead to worms, infections and other hygiene issues.
Many people these days seem keen on putting their fingers in orifices that should be off limits.....then fail to wash their hands afterwards........Then bite their nails.... Dirty bastards.
People who do this in public should be given a really good slap by health and hygiene Police who would have other responsibilities such as preventing cunts from eating in public....
Fuck off.