Haha. Google "Condom Challenge" where these kids are filling condoms with a large amount of water and dropping in on someone else head. If it's done "correctly", the condom stays filled with water AND encases a whole human head. It's funny and childish, yes. But it is a very good advertisement for the durability and elasticity of today's condoms.

The old phrase "No glove. No love." is still appropriate. Testing after the fact is really scary with things like HIV and Herpes out there.