Rajesh Koothrappali is an astrophysicist whose main problem was his inability to talk to women.
Thanks to his selective mutism, Raj struggles to have any conversation woman outside his family. When he realises he can if he has an alcoholic drink he can do it, things begin to change. The trouble is, Raj isn't always the most pleasant person to be around when he's had a drink.
A bad break up causes Penny to come and console him, when he suddenly discovers he can talk to her without any beverages. Suddenly a world of dating begins to open up to Raj and life changes for the better.
Are you the ultimate expert when it comes to all things Rajesh Koothrappali? This quiz is set to test even the biggest fan of The Big Bang Theory, all you need to do is decide if Raj did each of these 12 statements.
Some are things that Raj did during the 12 seasons of the show, others were done by one of his friends, whilst some things we've just made up.
Do you remember if Raj bought a cat when he broke up with Emily? Can you recall which series it was that Raj spoke to Penny for the first time without having a drink of alcohol?
Only a few fans of The Big Bang Theory will be able identify which of these 12 things Raj did. Let's see how many you get correct!