A Norristown man has admitted giving alcohol to an underage friend who became sick from intoxication. 19-year-old Sean Horan got one year on probation Tuesday in Montgomery County Court, after pleading guilty to furnishing alcohol to a minor.  The incident happened on December 23 of last year, when Towamencin Township Police went to a Walnut Lane home to investigate a report of an 18-year-old overdosing on alcohol.  He was lying on the floor and vomiting.  Horan told police his parents owned the home, but he did not live there, and when he arrived he took beer from the refrigerator and got drunk with his friend.