1. The one that enters the train although not all passengers had the chance to get off. (Most likely the same kind of person that yells “First!” during intercourse.)
2. The one that squeezes into the train and triggers the Do-not-enter alarm. Interestingly, they always look the other way. Surely, they would shrug their shoulders if they had enough space.
3. The one that smells like s/he rubs him/herself with pork on a regular basis.
4. The one that puts the mobile on speaker phone. For some reason, they never discuss interesting topics.