Top Definition
a white-pastey irish kid who is always beligerant. you can find him running around naked and screaming obsenities. i.e. "give me that dick." usually always found in his asshole mode he believes he is charming with the women (which he's not) and funny (not really). plug your nose because he can also give off a pungent odor. he likes to be reffered to as denny and if you see him give him a wave which he will most likely not return. If you have a young daughter keep her close he might take her virginity.
you were such a Sean Dennison last night
by mr. 3000 May 01, 2010

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