Not sure if you're a serial offender? See our list below and find out if you need to re-think your actions before you pick up a phone or turn on a computer again...

1. Working across two monitors

Unless you’re in MI5 or head of IT at Intel, you’re just showing off, Johnny Two Screens. This also goes for turning your monitor sideways, changing your Word pages blue so that you can type in white and having a special mouse. The ultimate sin? A scroll of green computer code, a la The Matrix, as your screensaver. It’s over, you weren’t The One.

2. Mild men in rapper cans

Warning, gentlemen: if your suit is an off-thepeg Burton number and you got your watch from a posh Christmas cracker you shouldn’t attempt to pull off Beats or any other celebrity endorsed headphones. It’s as silly as putting 40-inch chrome rims on a Ford Mondeo.

3. A picture of a dog/baby as your Facebook profile picture

Firstly, it’s not you. Secondly, it’s not you, idiot! Plus, nobody cares how cute your dog/baby looks in a bee costume and, if we’re honest, it’s all a little bit creepy

4.  Answering the phone with anything but “hello”

People who just say their first name very quickly are annoying, anyone who barks their surname even more so, and those who snap, “Yep?!” have delusions of grandeur. The editor won’t let us print our opinion on people who answer their phone with a breezy “talk to me”, but we’re sure you can devise your own fitting insult.