1. used before you say something serious
I make fun of him/her, but all joking aside, he/she is a great person
This is usually said after making a light-hearted or joking statement, but before you say something more serious or important. People might be having a conversation within the larger context of something serious, but they engage in 'small talk' or just chat about unimportant things, before focusing on a significant issue. Saying 'all joking aside' after something funny is said is a great way of changing the subject and preparing someone for switching to the serious matter.