Was at the DTW LH Lounge this past Monday afternoon waiting for a UA flight to ORD.

Saw the funniest thing while there: a lady came into the lounge, used the restroom, and began to pilfer two bottles of beer from the fridge (one Warsteiner and the other Pilsner Urquell), putting them into her backpack. Someone else spoke up and the staff alerted her that she could not remove the beer from the lounge. The woman opened the Warsteiner, took a couple sips, and put the bottle down. As the woman refused to present her Star Gold credentials to the lounge staff, she proceeded to leave the lounge.

Is there a Flyertalk term-of-art for a customer who sneaks into a lounge? Lounge louse perhaps?