The Centers for Disease Control and Prevention have just issued a public warning that will make most people say 'ewww'.
Last week, the CDC tweeted out "Don't wash or reuse condoms! Use a fresh one for each sex act." The idea of re-using a condom might sound revolting to most people, but the CDC insists "We say it because people do it."
Some other "don'ts" from the CDC include wearing more than one condom at a time and storing condoms in your wallet, where they can be damaged by heat or friction.
What other gross habits should the CDC warn us about?