It is normal. Most men are embarassed about it but honestly, it's normal. Also with young guys. Especially if they're drunk. I sometimes feel sorry for them though, girls do talk... I mean it's not something I go around telling people, but once I was drunk I told a girl who had messed around with the same guy as me for a while that the one time we almost got into he couldn't perform... She told me the same had happened with her. I'm not proud of telling though although I don't think telling her was so bad as she had been intimate with him aswell. I wouldn't tell anyone else, it's no one's business and it's not really a big deal.