Mad Seamie is something you say when somebody does something completely mad or idiotic. You also use it sarcasticly when a person never does anything without thinking about it first.
by Joycey 201 August 4, 2007
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Mad Seamie
• mad
• mad dog
• mad lad
• mad cow disease
• mad tv
• Mad cow
• mad niggerish
• Mad Cunt
• Mad-town