As you make your way through the story of The Last of Us, you will often find there are some optional conversations that you can have with other characters. Similar to this, Ellie can sometimes tell jokes but they will be unprompted and you will need to know where to be and what to do if you want to collect them all.
There are five jokes in total that you will need to listen to if you want to unlock the “That’s All I Got” trophy. To listen to these, you will need to follow the steps in the video below to ensure that you meet all of the requirements to make Ellie tell the joke. None of these are overly difficult but you need to be aware of them to avoid having to restart to a checkpoint to try it again.