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The star revealed last year on The Late Show that he was going through the process of having many of his tattoos removed, admitting "embarrassment was only partly to blame" for the decision.
"I'm getting rid of them because I got tired of getting painted in the makeup chair anytime I wear a t-shirt, it buys me an extra 45 minutes sleep in the morning," he explained at the time. "Obviously, none of them had that much significance to me that I would choose 45 minutes over my own history!"
And Farrell recently was spotted in Los Angeles showing off his newly bare arms.