The 18-year-old had the tattoo - which is his first - inscribed on to his forearm by his father's friend, Mark Mahoney, at the Shamrock Social Club in Los Angeles, reported The Independent.
Brooklyn also posted a series of black-and-white pictures of his sore-looking arm, featuring the brand-new piece of body art.
"Honoured to have my first tattoo done by dads friend Mark Mahoney," he wrote.
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