During the 1984 exhibition of freeze-dried sculptures in London, Gibson was given two dehydrated human fetuses from an anatomy professor. They were 10 weeks in development and had been dehydrated for 20 years. Gibson re-hydrated both fetuses, freeze-dried them and attached them as earrings to a female mannequin head. The sculpture was titled Human Earrings. They were exhibited at the Young Unknowns Gallery in south London in December 1987. On Thursday, 3 December 1987, the sculpture was seized by the Metropolitan Police. Because of this incident, Gibson was expelled from Goldsmiths College on 21 December 1987, where he was studying post-graduate art, design and technology. On 11 April 1988, Gibson and the gallery owner, Peter Sylveire, were formally charged with the common law offences of exhibiting a public nuisance and outraging public decency.
Immediately following the verdict, an appeal application was filed. However, on 10 July 1990, the Court of Appeal dismissed the case and upheld the earlier conviction.
There was considerable media commentary about this sculpture before, during, and after the trial. The court case was also the subject of a one-hour British television programme.
On 23 July 1988, Gibson ate the flesh of another person in public. Because England does not have a specific law against cannibalism, he legally ate a canapé of donated human tonsils in Walthamstow High Street, London. A year later, on 15 April 1989, he publicly ate a slice of human testicle. When he tried to eat another slice of human testicle as "hors d'oeuvre" at the Pitt International Galleries in Vancouver on 14 July 1989, the police confiscated the testicle. However, the charge of publicly exhibiting a disgusting object was dropped, and two months later he finally ate the piece of human testicle on the steps of the Vancouver court house.
On the morning of 6 January, a group of animal rights activists from the Lifeforce Foundation stole the device Gibson was going to use to crush the rat. Lifeforce's Peter Hamilton said that it was done to protect both the rat and Gibson. Because of this development, Gibson arrived at the corner of Robson and Burrard at 1:00 pm without Sniffy or his art-making device. He told a crowd of over 300 people that he had returned the rat to the pet shop from where he had rented it. He encouraged the crowd to go to the pet shop and rescue Sniffy before it was sold as snake food. He later told CBC that he had full intentions of killing the animal. As he tried to leave the area, Gibson was surrounded by activists. He, along with Susan Milne and Paddy Ryan, were chased up Burrard Street by a mob. The three of them escaped through the Hotel Vancouver.
Later that day, Sniffy was purchased from the pet shop by Peter Hamilton of the Lifeforce Foundation.
Immediately afterwards, cartoonists, writers, and the general public commented on the event. Numerous books have also made reference to it. Several television shows have also focused on it. For the tenth anniversary of the performance, Radix Theatre, under the direction of Andrew Laurenson, created the Sniffy the Rat bus tour.
In 1996, Gibson received a research position at the Centre for Image and Sound Research at Simon Fraser University to study anaglyph images. He exhibited some of these images at the 1995 Currents exhibition in Vancouver and in Victoria, BC. In 1996, he built the world's first completely anaglyphic website. Between 2002 and 2004, he studied 3D lenticular printing for his master's degree. By 2006 he was publicly showing autostereoscopic prints. In 2007 he had a major exhibition of this work at the 3D Center of Art and Photography in Portland, Oregon. In February 2011 he exhibited six large lenticular prints at the Blim Gallery in Vancouver, Canada. These prints paid homage to six renowned religious leaders by revealing the penis of God within them.
Gibson gave a talk to the International Society for Anthrozoology (ISAZ) at Cambridge University in July 2012 about the use of live insects in art and entertainment. On 8 February 2017 Gibson walked naked in front of the Vancouver Law Courts in the middle of winter to protest Canada's ban of genetic engineering of the human genome. He walked nude in downtown Vancouver for 11 minutes, 45.75 seconds in a light rain and a temperature of 7 degrees Celsius.
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