Mailed himself to australia

That's an interesting one!

I'm assuming you're referring to a famous stunt or prank, rather than an actual person mailing themselves to Australia.

If that's the case, I think you might be thinking of David Blaine, a magician and endurance artist, who performed a stunt in 1996 where he mailed himself to Australia in a special package. The stunt was part of his TV special "Street Magic" and was a publicity stunt to promote his show.

Blaine was placed in a specially designed box with a limited supply of food and water, and was then mailed to Australia via airmail. The box was tracked by cameras and was opened live on TV when it arrived in Australia.

It's worth noting that this stunt was likely staged and not actually possible in real life, as it would be extremely dangerous and impractical to mail a human being across the globe.