Plastic food wrap -- The Center for Disease Control and Prevention says that plastic food wrap can also be used as a barrier during oral sex. 

If you use one of these barriers:           

·         Don't reverse it.

·         Don't re-use it.

·         Don't transfer it from anus to vagina or vice versa.

·         Try some lubricant on the partner's side to enhance pleasure. 

Talk Before You Go Down
Communication is everything when it comes to a relationship, and that's so true when it comes to oral sex. 

Discuss with your partner whether you want to have oral sex or not. Discuss each other's sexual history and history of STDs. Get checked out by a doctor together. Go for an HIV test together. 

If you decide to have oral sex and you want to keep your risk at a minimum, discuss using a barrier method before you get to one of those adolescent moments of truth. 

And if you don't want to do something sexually, say so! Otherwise your partner may keep you going down for more.