Licking a lady’s bottom can be infected with HIV, can be answered bluntly, the probability is extremely low, even negligible. All things are possible, if a female worker, has an STD and is HIV infected, and a male performs oral sex on her, and the male happens to have bleeding gums and mouth ulcers, theoretically it is possible to get infected, but it is much lower than if the male is infected and the female has mouth ulcers and bleeding gums, and the female performs oral sex on the male. The probability of transmitting HIV and STDs from oral sex is very, very low compared to anal sex and vaginal sex, but it is not without risk.