@prone
The only serious reply in this thread is #2. This isn't a dig at you, but rather at the sheer amount of misinformation that's on the internets. I don't know where you're from, but for what it's worth Hong Kong (along with many other Asian countries) has some pretty poor sex education both in the school cirriculum and sociocultural knowledge.
both you and WG use mouthwash (listerines) before starting doing anything
Mouthwash doesn't actually do anything to clear or reduce bateria and germs. There are peer-reviewed scientific studies demonstrating that the amount of bacteria in the mouth isn't affected by mouthwash use. When Listerine was first developed in the 19th century, it was (and continues to be) marketed as an antiseptic. Halitosis (bad breath) was marketed as a medical condition that you didn't want -- but this was all fake; this was marketing. Halitosis was a made up word for advertising.
check for mouth ulcers before doing any oral
Oral ulcers are quite common. They're associated with many diseases and mechanisms, but there's no serious underlying cause. They're not always bad and without professional medical advice you wouldn't know whether your oral ulcer makes any difference. Additionally, how are you seriously going to ask a WG if you can check her mouth for ulcers? When you go on a date, do you ask the girl if you can examine her mouth before kissing?
if you want to DATY, make her wet first with your finger then see if there is bad smell or unusual fluid discharge coming out of LS
Think about this logically. By using your finger to make her pussy wet you're already making skin-to-skin contact. If the girl has an STI then it's already a losing battle. Any vaginal odour can also be associated with uneven vaginal pH balance, inflammation, poor hygiene or any other number of common and uncommon reasons. Smell and fluid discharge isn't enough to determine whether or not the girl has an STI. Also, a person doesn't need to have external signs of an outbreak to actually have an STI.
do only mish if you are worried about STD potentially caused by LS fluid reaching the base of your LB that is not covered by condom
Again, think about this rationally. The only way not to have any contact with any fluids whatsoever is to abstain from sex completely. When you have sex, skin to skin contact and contact with fluids is going to happen in varying degrees regardless. Additionally, there are a lot of ways to contract STIs that don't require intercourse or the exchange of fluids. This includes general contact such as grinding, and manual stimulation can spread HPV and pubic lice (crabs).
peeing right after you 'finish'
I don't even understand what this is supposed to accomplish in terms of preventing STIs. However, for men, by peeing after orgasm you can clean the urethra of any residual semen. For women, peeing after sex is recommended because urination can help clear their urethra of any bacteria that may have been pushed up during sex. Some STIs are bacterial and some are viral. If there's an STI in play then urination isn't going to do much about it.
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Last edited by Freelancer at 16-5-2015 09:33 ]