We have long suspected Hong Kong people, cashed-up and away from prying eyes, turn animal the minute they arrive in Shenzhen. And Aids Concern seems to agree. Below is an extract from the mini sex guide the organisation is handing out at Lo Wu, matching each Chinese horoscope with its ideal condom: - Roosters are keen on sex and have sensitive skin. Go for condoms with rugged crests. - Clear-headed monkeys are intelligent sex partners. Condoms with raised spherical spots stimulate them. - Hard work and mild manners are typical of oxen. Buy flimsy condoms for them. - Easy-going snakes sneak around. Get condoms that fit them perfectly. - Rats are sexually creative and extroverted so they should use extra thin ones. - Tigers should use industrial-strength condoms because they are sexually aggressive and strong.