Vanilla Ice wants Justin Bieber to stop acting like a shirtless douchebag all the time and take Miley Cyrus' advice -- before his career becomes a big, fat joke.
Ice a.k.a. Rob Van Winkle thinks Miley was dead on when she told Rolling Stone ... she's been telling Bieber to put an end to the d-bag antics ... before people "think he's Vanilla Ice."
Rob was honored Miley name-dropped him as the bad example -- and paid respect with his own Miley-esque foot pic -- telling us he knows exactly where Biebs is coming from ... but only Justin has the power to make a change.
"It's like living an artificial life" Van Winkle says, adding, "when the dust settles, no one can figure it out or help you but yourself."
Word to your mother.
Bieber Needs to Change
9/29/2013 12:10 PM PDT BY TMZ STAFF
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