An australian term to name someone, meaing they are just not a great guy. However, this is much more proper used when in a situation where your friend does something unfriend like.
Tim: Frase, you wanna come to my place this weekend?
Fraser: Nah mate im going to practice my bowling technique
Tim: You are such a Jono Ellis, Frase.
Kizza: So why didnt Goldsy come out last weekend?
Sitchy: He had to go shopping with his new girlfriend.
Kizza: What a Jono.