Post Malone on Iverson: BIG3 Knew What It Signed Up For

Allen Iverson's never been a choir boy -- and that's why Ice Cube and the BIG3 shouldn't have been shocked when he blew off a game last month in Dallas, so says Post Malone.

Of course, Post is the rapper behind "White Iverson" -- and has said A.I. was one of his heroes growing up. He also knows Iverson has a history of doing whatever the hell he wants, whenever he wants.

"He's a wild boy," Malone says ... "You can never stop him."