Chauvinistic northern men have been blamed for low ticket sales at an erotica exhibition in Manchester.
The Manchester show has been hit by low attendances
Only 20,000 people are expected at the Erotica 2005 event, which opened on Friday, compared with 70,000 who saw the London Olympia show in November.
Organisers claim research shows more women would attend but are intimidated by their boyfriends and husbands.
Event director Sawas Christodoulou has threatened to pull the plug on the event if sales do not increase.
"We thought Manchester was a sexy city, but perhaps we were wrong," said Erotica spokeswoman, Emma Sayle.
"Ironically, more women from the North head to our November event at London's Olympia than are prepared to be seen to be having fun in their own city.
"Our research has shown that they are intimidated by their men, who don't want their inadequacies exposed.
"We thought that Manchester had entered the 21st Century like everywhere else, but it seems Mancunians in particular are stuck in the past.
"Northern women seem far more comfortable getting out of town so that they can express themselves."
The event, which features about 100 stalls selling adult goods, is being staged at the city's G-Mex Centre until Sunday.
It was last in Manchester in 2003 but has been held in London nine times previously.
The London show was granted a full nudity licence, but the Manchester event is only allowed to stage topless shows.