An off-duty NYPD officer was arrested early Sunday morning after allegedly threatening a bouncer at a Queens club who refused to let him in. It was around 1 a.m. on Sunday when Officer Trevor Harpaul, 28, arrived at Mingles Lounge in Ozone Park wearing a red baseball cap, sneakers and shorts. But such sartorial stylings are prohibited at Mingles, and the doorman denied him entry. A manager tells the Daily News the officer was "very intoxicated with slurred speech. He insisted on coming in." Harpaul, a four-year member of the force assigned to Brooklyn's 84th Precinct, allegedly flashed his badge and told the bouncer, "You think you're big? I've got something for you." Police sources say he then retrieved an unlicensed handgun with a defaced serial number from his car, pointed it at the bouncer and asked, "Where's your mouth now?" Two uniformed officers soon arrived and arrested Harpaul, who also had marijuana in his car. He's charged with weapons possession, reckless endangerment and menacing, as well as possession of marijuana and other counts. But can you blame Trevor Harpaul for getting upset? The man was turned away from Mingles in Ozone Park.