Men Are From Mars, Women Are From Venus, And I Just Pulled This One Out Of Uranus.

A young couple with a box of condoms proceeded to burn some rubber.
When they were finished, she discovered that there were only six condoms remaining in the box of 12, so she asked him, "What happened to the other five condoms?"
His nervous reply was, "Er, I masturbated with them."
Later, she then approached her male confidant friend, told him the story, and then asked him, "Have you ever done that?"
"Yeah, once or twice," he told her.
"You mean you’ve actually masturbated with a condom before?" she asked.
"Oh," he said, "I thought you were asking if I’d ever lied to my girlfriend."