Everyone knows what unsafe sex is, and it goes without saying it should be avoided, but some partners will offer up arguments like "I'm sterile" or "I'm clean" to get you to have sex without a condom. When we're talking casual sex, it's always a good idea to use protection. Don't put your health and well-being at risk by having unprotected sex. The same goes for sex while under the influence of drugs or alcohol. Inhibitions are lowered when substances are thrown into the mix, and that can create another unsafe sex situation, whether it's not using a condom or going home with someone you don't know very well. You're more likely to put yourself at risk of getting into a dangerous situation when you're wasted - and wouldn't you rather remember the experience anyway?