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Mark Wahlberg probably wishes he was vacationing in Hawaii, but since The Fighter star is stuck in LA, he'll wear his love of the islands on his shirt.

As he left Sushi Roku in Los Angeles, the former rapper known as Marky Mark, showed off his "Mahalo" T-shirt ... the Hawaiian word for "thanks."

After seeing his fine form on the big screen as a boxer, we're giving thanks that he stays so lean and sexy. We'll take an upper cut from this guy anytime!