1. (n.) A man of 50 or more years who tries to recapture his former virility, potency, and attractiveness by working overly hard to impress the opposite sex by using hip, cool, and or suggestive speech, movements, or mannerisms.
2. (n) an aging playboy
Denise tried for hours to extricate herself from the attentions of the Viagran who pestered her all during the party.
A Viagran slithered up to a group of girls and started to tell them dirty jokes.