Here are some things that i find to be rather irritating..
1. Opening the door and leaving it open after leaving..
when you leave my room please close the door i don't want my door open 24/7 -_-
2. Clingy friends / People
I love my friends but i also like my alone time, when it comes to friends some friends wants to be around you all the time 24/7.
3. when someone plays loud music while your sleeping.
very annoying it makes you want to get up walk in there and smash the device making the noise.
4. sick in public
its bad enough being sick but when someone comes around you coughing and sneezing it can be very annoying.
5. Lazy people
don't you find it annoying when someone wants you to do everything for them and cannot do anything for themselves? and every 10 minutes they are calling you to get them something or complete a task for them!