The Advanced Medical Institute's latest billboard has "Bonk longer!" written in big red letters, a response to the censoring of their similar-looking "Want longer lasting sex?" posters that were outlawed by the Advertising Standards Bureau in August.

The billboard, on Sydney's Parramatta Road, went up this morning.

Despite prompting over 220 complaints from their original campaign, the AMI believes the new promotion will be more acceptable.

"I think that people who understand the word 'bonk' understand it, and the ones who don't, don't," said AMI spokesman Dr Chris Fenton.

http://news.ninemsn.com.au/article.aspx?id=663170