The only thing sillier than Puppetry Of The Penis is pretending there's anything wrong with it.

Demonstrating the "ancient Australian art of genital origami", it features two well-endowed Australian hunks who bend stretch and elongate their manhoods into more than 40 shapes that include The Pelican, Eiffel Tower, Olympic Flame, Kentucky Fried Chicken, Fruit Bat and everyone's favourite, The Hamburger.

"Ouch!" you may be saying as you cross your legs. "They do what with their what?" The answer is yes. That's what they do and that's what they use to produce a thoroughly entertaining show.

The beauty of this show (if there is such a thing) is there's not a bad seat in the house. Behind the two men onstage is a mammoth screen that projects their penises and scrota in to larger-than-life images. The folks sitting in the cheap seats don't miss a thing - and, as creator David Friend points out, "some people don't want to be sitting that close".

Do they ever combine forces and perform any tricks together? "Never," says Friend. "I try to keep as far away from Simon as possible and he tries to keep as far away from me as well. It's weird enough as it is."

Puppetry Of The Penis debuted in 1998 at the Melbourne International Comedy Festival.

The duo took Australia by storm then crossed continents to conquer London's elite. They proudly proclaim their penises have been perused by such pop celebrities as Hugh Grant, Naomi Campbell, Elton John, Bono, and Joan and Jackie Collins.

Their popularity has grown steadily but one can stretch a penis only so far. So how long will they continue being puppeteers?

"We don't want to go for too long," says Friend. "We don't want to be old men tripping over our nut sacks. We've made enough money, though, so we don't have to go to work at a desk job."

In case you're wondering, their show is erection-free.

"There's no place for turgidity. That's probably what's made this act get as far as it has," says Friend.

"It was a bit embarrassing when my mum was in the audience. I didn't know she was coming and she was seated in the front row.

"She thought it was funny enough but just wishes it was someone else's son who was doing it."

Show starts 9.30pm, tickets £15.