Justin Bieber I Want Canuck Kids

8/24/2011 2:30 PM PDT BY TMZ STAFF

Justin Bieber's nearly a grown-up (check the mustache) and when it comes to raising his future children ... the Biebs tells TMZ, only Canada will cut it.

Justin also claims teenage girls across South America are flooding the streets in despair -- watch the clip from today's TMZ Live to find out why.