Surprisingly, amongst the 331 female inscriptions there were no references to heterosexual dating (homosexual dating scored one per cent). There were no homosexual references to anal contacts, and only one per cent heterosexual reference to anal activity. Oral contacts scores two per cent (heterosexual) and one per cent (homosexual); "other erotic items" also scored two per cent (both heterosexual and homosexual). Most frequent sexual references by males

The investigators found 1048 sexual and non-sexual inscriptions in male toilets, of which the largest category (30 per cent) were homosexual oral contacts, with heterosexual oral contacts scoring only eleven per cent. Twenty-one per cent of the inscriptions were to homosexual dating and eighteen per cent to homosexual anal contacts.