The promotion by Pascha, reputed to be Europe's largest brothel with 120 prostitutes working on 12 floors, would eliminate its $6 entry fee in exchange for inking its logo onto customers' arms in big blue letters. Managers thought the offer wouldn't be taken seriously but patrons are lining up for it, The Daily Telegraph reported Wednesday.

More than 40 men had come forward and the brothel's tattoo artist is working extra shifts to keep up with demand, the newspaper said.

The tattoo will get the bearer discounts on other services like lap dances but even tattooed customers will have to pay full price for the prostitutes' services since they're independent contractors, the Telegraph said.