Jackman, who walked the red carpet at the New York premiere of his new sci-fi action thriller Chappie, talked to ET's Jason Dundas about his affinity for Instagram.
"Well, come on. I'm Australian," Jackman said, laughing.
Jackman added that his drinking photos are a bit of a travelogue documenting the places he's gone while promoting his films.
"Every country you go to you have to have something very particular to drink that's local," Jackman explained. "It's part of traveling."
Check out the video above to hear how Jackman's wife felt about the mullet he had to grow for the film.
Chappie, directed by District 9's Neill Blomkamp, explodes into theaters everywhere March 6.