This is a Rant. Public Transport edition.

Trains, in particular. 
these are things which people do that irk me when i'm on a train:

Chewing with your mouth open. DISGUSTING! first of all, chewing sounds are horrible, they make me want to be sick, and second, no one wants to see your lunch all mushed up in your mouth, not to mention crumbs spraying everywhere. it's making me nauseous just thinking about it. bottom line: chew like you have a secret.

Slurping drinks. this form of irritating behaviour in my observation is mostly found in teenagers with slushy drinks from 7-11. Please stop, it's bad manners, it's noise pollution and it's really unnecessary. if your straw is failing you, just give up.

Sniffing. Yuck, yuck, yuck. you are germy and gross. get a tissue please.

Coughing without covering your mouth. again, yuck.

Talking loudly on the phone. nobody is interested in your conversation, please lower the volume or tell the other person you will call them back later.

Invading peoples' personal space. I understand that during peak hour when the trains are crowded, it makes sense to just sit or stand wherever there is space, but when this is not the case, PLEASE don't sit next to me, breathe on me, touch me, just augh!! I don't know how many times i've been on a fairly empty train, with any number of places to sit, and people get on and insist on sitting RIGHT. NEXT. TO. ME. i hate it, and i'm sure i'm not alone. and standing! i once had a seat on a train with a medium level of crowded, but not so much that the passengers were packed in like sardines. this however did not deter an extremely rude man to stand right in front of me, basically thrusting his crotch in my face for the entirety of his journey. Thankfully, he got off several stops before me, and also thankfully, i had a book so i could at least try to ignore this inconsiderate behaviour.

Bringing young children on the train. I understand that sometimes this is necessary, but if you must do it, please try to control your offspring. seat kicking, screaming, crying, whining, etc. just reinforces my wish for the 'children should be seen and not heard' rule to be reinforced.

Starting up conversations with random strangers. Don't do it. Ever. I don't know what it is about me, do i have a general aura about me that says 'tell me your life story'?! NO!!! i routinely carry reading material when i use public transport so as to ensure a happily solitary journey. do NOT sit down and try to talk to me. i will assume you are a psycho.