9 Blow Job Secrets Men REALLY Wish You Knew 1. Put on the condom. If this isn't your long-term guy, he should be wearing a condom during a blow job. And while he 2. Building up anticipation. Kiss and lick his inner thighs while you tease his . According to a study, a staggering 34 percent of people admitted to never using condoms during oral sex. But the truth is, you can get a whole bunch of STIs from unprotected oral .