Actually, I am not so afraid of getting bacterial STDs. It's the viral ones that are a killer.

I have had one bacterial one before and they are easy to cure with antibiotics and a jab on your butt!

The viral ones like HIV and Shypliss (sorry can't spell) are not cure-able.

Anyway, to avoid all kind of STDs, even the bacterial ones, use the rubber even for BJ. I got mine from BBBJ.

The 100% way is to practice manogamy.