Top Definition
n. The alter ego of an Irish College student.

-A Shannon O'Houlihan usually appears when one is under the influence of alcohol.

-Once a Shannon appears he is known to make the person extremely loud, rude, and in some cases high.

-A Shannon O'Houlihan is an absolute champion of the game of Beirut (also known as Beer Pong). He has been said to quote that he "pwn3s fools" in the college sport.

-A Shannon O'Houlihan is known to enjoy many fine tasting alcoholic beverages. This includes, but is not limited to: Guiness, Smithwicks, Paps, and various Samuel Adams brews.

-A Shannon O'Houlihan can be very violent at times, use extreme caution around him.
Person 1-"Oh boy he is pretty wasted..."

Person 2-"Let's just hope he doesn't turn into a Shannon O'Houlihan."
by FluffyBunnies09 December 10, 2009
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.