. Those who peer down the subway tracks every 5 seconds to check if the train is coming. It wont come any faster if you keep looking for it. It only makes you more antsy and drives everyone else crazy. Tip: Subway trains make lots of noise. Sit down with a sefer and when you hear rumbling get up to the platform.
. Those who drop mail into the mailbox and then proceed to open and slam closed the “door” 5 or 6 times creating a racket. Gravity works, even in a mailbox. It will fall into the box. all you accomplish is give everyone a headache.
. People who walk into a shul that davens Nusach Ashkenaz, insist on davening for the Amud in their Nusach which is different (or vice versa). Forget the halachic aspect for a moment, its just rude.
. People who have cellphone conversations where everyone around is an unwilling party to the conversation. I dont care that Chani just looooves those shoes she just picked up, or that Shlomie is going on a 6th date with Shevy tonight. Keep your conversations to yourself.
. People whose Bluetooth devices are hidden (under a shaitel, hat etc..) and who are apparantly speaking to you and when you respond, ignore you because they are NOT talking to you.